Majestic Stormstriker

Defender, Flying
All creatures gain flying. Every time damage is dealt to a player or planeswalker, put a storm counter on target creature. Creatures with storm counters lose flying. Exile any creature that has storm counters on it equal to its toughness
{u}{u}{u}: Withdraw all storm counters, put a 2/2 Token Blue Druid onto the battlefield under your control