Tempest's Awakening

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)
As your team casts instant and sorcery spells
from their hand this turn, they gain rebound.
Partner with Eruption's Ignition (Target player
may put Eruption's Ignition into their hand from their library, then shuffle.)