What it does
Rain Dish restores 1/16 of the holder's max HP at the end of each turn when rain is active. No action required. The heal just happens after everything else resolves.
1/16 per turn adds up. A Lv50 Blastoise sitting at 160 HP recovers 10 HP each rain turn — 50 HP over five turns. That's the equivalent of getting a free Leftovers tick without spending the item slot. More importantly, the recovery happens after taking damage, which means KO thresholds are softer than your opponent expects. A hit that should end the turn doesn't, and now they need to spend another attack.
One thing to be clear about: Blastoise has a Mega Evolution form, but Mega Blastoise's ability is Mega Launcher — Mega Evolution completely replaces Rain Dish. So Rain Dish is a non-Mega choice. That's actually one reason you might run Blastoise without Mega-Evolving: you keep the passive sustain instead of swapping to the Mega Launcher power boost. Both directions are valid depending on what the team needs.
Rain Dish does nothing in sun, sandstorm, or snow. In doubles, rain comes from Drizzle on Pelipper.
Who runs it
Blastoise at 59% usage is the only carrier that actually builds around this ability in Champions. Its bulk makes the passive healing meaningful — it has the HP and Defense to stay on the field long enough to accumulate those ticks. Standard setup: non-Mega with Leftovers or Rocky Helmet, Scald for burn fishing, Ice Beam for Grass coverage, and Protect as the doubles staple. Every Protect turn, Rain Dish fires for free — guarding and healing at the same time.
Pelipper shows 0% Rain Dish usage for a reason: Drizzle is always the correct ability. Pelipper's job is setting rain, and you can't use Drizzle and Rain Dish simultaneously. Rain Dish on Pelipper only makes sense if you already have another rain setter — which is almost never the situation.
How to use it
The pattern is straightforward: get rain up, put Blastoise on the field, and let the heal accumulate.
Protect is Rain Dish's best friend. In doubles you're already running it on almost every set — Rain Dish turns those stall turns into net-positive healing. If your opponent has to split damage across two targets, the protected Blastoise is recovering while the other Pokémon handles the threat.
Burn interacts in an interesting way: burn deals 1/16 damage per turn, Rain Dish recovers exactly 1/16. They cancel out. An opponent trying to burn Blastoise to death in the rain is spending a move for zero net damage over time.
Tips & strategy
Mega or Rain Dish — pick based on role. Non-Mega with Rain Dish plays like a defensive support anchor; Mega with Mega Launcher plays like a special attacking threat. Figure out which role your team needs before locking in the set.
Weather wars matter. Rain Dish only pays off while rain stays active. Against sun or sand teams, Pelipper's Drizzle will fight for field control with the opposing weather ability. If you can't hold rain, Rain Dish does nothing — clearing the opposing weather source is the priority.
Rain Dish vs Leftovers off rain: Outside a dedicated rain team, Leftovers is more consistent. Rain Dish's advantage is that it frees up the item slot, letting Blastoise hold Rocky Helmet or Assault Vest while still getting healing in rain — but that's conditional on your team actually running weather.