|"Sorcery", |"Instant", +"Mercadian Masques", +you, +may, +exile (4)
You may exile a red card from your hand rather than pay this spell's mana cost.
Cave-In deals 2 damage to each creature and each player.
You may exile a blue card from your hand rather than pay this spell's mana cost.
Change the target of target spell with a single target.
You may exile a white card from your hand rather than pay this spell's mana cost.
Choose a color. All creatures gain protection from the chosen color until end of turn.
You may exile a black card from your hand rather than pay this spell's mana cost.
Target player reveals their hand. You choose a nonland card from it. That player discards that card.
Gatherer works better in the Companion app!