Rimuru Tempest

Monster Affinity- Rimuru Tempest costs {1} less to cast for each color among permanents you control.

Whenever Rimuru Tempest deals combat damage to a player, exile target creature that player controls. Until end
of turn, you may cast cards exiled with this ability and spend mana as though it were mana of any color.

If Rimuru Tempest were to leave the field, except by returning to hand, regenerate it unless an opponent pays
{3}.