BASIC — Hook: you're staring at a full-HP Garchomp
Your attacker's hit takes off about 80% and leaves it alive by a sliver. End of turn, it clicks one move and removes your attacker, and the whole tempo collapses. The problem usually isn't your move choice or your target — it's that the item you gave this Pokémon left it parked at "almost." A held item doesn't decide "how much extra"; it decides whether this hit closes out the turn. This lesson is about computing that decision.
BASIC — Core: pick the role first, the item just tunes it to usable
Each Pokémon carries one item. One. So the right mental model isn't "which item is strongest," it's "what does this thing do for the team, and which item tunes that job to just-good-enough."
Three buckets — memorize the hard numbers:
- Power: Choice Band/Choice Specs multiply Attack/Sp. Atk ×1.5 but lock you into your first move; Life Orb multiplies damage ×1.3 with no lock, costing 1/10 of your HP per attack.
- Survival/longevity: Leftovers heals 1/16 each turn; Assault Vest gives ×1.5 Sp. Def but blocks status moves; Focus Sash survives any guaranteed KO at 1 HP if you're at full; Sitrus Berry auto-heals 25% when you drop below half.
- Speed/utility: Choice Scarf gives ×1.5 Speed but locks your move; Safety Goggles blocks powder moves and weather chip; Rocky Helmet reflects 1/6 on contact.
Keep this in mind: damage is an 85–100% roll across 16 equiprobable steps, so "can it KO" is always a probability (e.g. 12 of 16 steps KO = 12/16). An item's whole job is to push that probability toward 16/16.
INTERMEDIATE — Worked→Faded: Band vs Life Orb, counted in 16ths
Fully worked. Your Garchomp hits a full-HP Landorus with Dragon Claw (STAB ×1.5 already baked in).
- No item: damage lands in 88%–104% of the target's HP. Only the top 3 of the 16 rolls clear the line → 3/16 KO, i.e. it fails to kill ~80% of the time.
- Life Orb (×1.3): the range rises to 114%–135%, all 16 rolls clear → 16/16, guaranteed KO — at the cost of 10% of your own HP on the hit.
- Choice Band (Atk ×1.5): range climbs higher, 132%–156%, also 16/16 guaranteed — no self-damage — but now you can only keep clicking Dragon Claw, and a Steel or Fairy-type switching in to resist or block Dragon leaves you spinning.
The read: once both push you to 16/16, the "more damage" gap between Band and Life Orb stops mattering — now you choose on side effects. Need the freedom to switch moves → Life Orb. Don't need to switch and want to keep your HP → Band. Items aren't a contest of bigger numbers; they're a contest of who maxes the probability first, then who pays the smaller cost.
Your turn (compute it). Same Garchomp, but now against a bulkier target where no-item lands at 70%–82% (0/16, a clean two-hit). Ask yourself: Life Orb's ×1.3 lifts the ceiling to about 107% — roughly how many of the 16 rolls clear? Band's ×1.5 lifts the range to about 105%–123% — how many there? Whichever turns the two-hit into a real shot at a one-hit is the item you should be holding.
INTERMEDIATE — When/Decision: if-X-then-Y
- If this thing's job is "come in, hit once or twice, leave," hold Life Orb or a Choice Band-class item — longevity is wasted on it.
- If it has to sit on the field eating chip (a wall, a weather war), hold Leftovers, not the self-harming Life Orb.
- If it's frail but valuable the moment it moves once (Fake Out lead, setting a screen, exploding), hold Focus Sash.
- If the opponent has a strong special attacker and this thing doesn't live off status moves anyway, Assault Vest buys it one more hit.
- If what you actually need is to flip one speed tier, hold Choice Scarf — not for damage, for moving first.
INTERMEDIATE/ADVANCED — Exceptions: where the simple rule snaps
- Scarf isn't "faster is always better." The ×1.5 may clear one threat's tier, but it can also overshoot, leaving you above a mid-speed unscarfed Pokémon that now under-speeds and moves before you in the wrong direction — speed tiers are about hitting a specific number, not stacking the most.
- Sash is brutally matchup-dependent. It only matters at full HP against a hit that would otherwise be a guaranteed KO. Any entry chip, weather damage, or a single prior point of damage voids it; multi-hit moves (two strikes in one turn) break it anyway.
- Assault Vest locks out Protect. Protect counts as a status move, so AV can't use it — and in Doubles, losing Protect is often worse than the Sp. Def you gained.
- Mega lives on a separate slot. The Mega Stone (which triggers Mega Evolution) is activated through the Omni Ring: one Mega, one stone, per whole team. It rewrites base stats and the Ability — so "who gets the stone" is a teambuilding decision at least as big as every power/survival tradeoff above, not a casual item drop.
INTERMEDIATE/ADVANCED — Mistake-Autopsy: the classic beginner error
The mistake: giving Choice Band to a Pokémon whose job is to rotate moves and apply pressure, just for that juicy ×1.5 number. You lead Earthquake, the opponent immediately swaps in a Flying-type — and you're locked on Earthquake, forced to either whiff a turn or switch out and hand over tempo. One item turned a flexible attacker into a one-move dummy.
Why it's wrong: the Choice ×1.5 is paid for with the move lock. It only fits a Pokémon whose one move is rarely a bad click and who isn't planning to switch moves anyway (broad coverage, or a pure clean-up nuke).
The fix: same firepower but you need to switch moves → Life Orb (×1.3, no lock). If you do run Choice, first verify in the calc that the move you'll lock into has no "switch-in immunity" against common opponents, and that someone else on the team can absorb the switch the lock invites.
INTERMEDIATE — Predict-then-Reveal: guess before you look
Your Dragonite holds Focus Sash, at full HP. The opposing Tyranitar has the ability Sand Stream, kicking up a sandstorm on entry. On the following turn, the opponent uses a guaranteed-KO-level hit on your Dragonite — does the Sash save it?
(Think for five seconds before reading on.)
Reveal: no. Sandstorm chips 1/16 HP at the end of each turn off anything that isn't Rock/Ground/Steel. When Tyranitar switched in, that sandstorm chip ticked at the end of that very turn — your Dragonite (Dragon/Flying) is already below full HP before the next turn even starts. By the time the big hit lands, the Sash's "full HP" precondition is already broken and it doesn't activate. That's exactly why Sash fears anything that pre-chips: hazards, sandstorm, poison, or last turn's leftover damage all stop it from lighting up when it counts.
ADVANCED — Now-Do-This: run it on your own team
Open the calc (the /calc handoff on this page). Take your team's most struggling attacker and its most stubborn target, and do this:
- Click once with no item; record the damage range and how many of the 16 rolls KO.
- Switch to Life Orb (×1.3); record the KO count again.
- Switch to Choice Band/Choice Specs (×1.5); record a third time.
Find the threshold: which item first pushes you from "can't kill" past 16/16, or to a probability you'll accept. If it's a Choice item that gets you over the line, ask whether the move you'd lock into has the "switch-in immunity" hole from above — if it does, step back to Life Orb and accept a few fewer KO rolls in exchange for the freedom to switch moves. Once you've run that, the item you hand this Pokémon stops being a guess and becomes something you back-solved from the damage rolls.