Rimuru Tempest

Whenever a creature is dealt damage by Rimuru Tempest this turn and dies, Rimuru gains all abilities of that creature.
{x}{r}{r}{t}: Deal X+1 damage to target creature.
(X cannot be 0)
{1}{u}{u}{t}: Draw 3 cards, then cast spell with converted mana cost 3 or less
without paying its mana cost.
{p/w}{p/w}: Regenerate target creature you control.