Deida, Explosives Expert

Aether Overflow {r}(When you cast this spell, if
another spell that shares a color with this spell was
cast this turn, add {r}).

Haste
When Deida, Explosives Expert enters the battlefield, you may pay {r}. If you do, Deida, Explosives Expert 1 damage to each creature
target player controls and 1 damage to you.