Herald of Secret Streams [Ixalan] Blue If that mana is spent

If that mana is spent on an instant or sorcery spell

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {3}{U}{U} You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost

that player chooses target player whose graveyard has fewer creature cards in it than their graveyard does and is their opponent

If you lose the flip

Whenever the fourth spell of a turn is cast

Herald of Secret Streams [Ixalan] Blue If that mana is spentSet: Ixalan Type: Creature Merfolk Warrior Rarity: Rare Cost: {3}{U} Creatures you control with +1 +1 counters on them can't be blocked. "You might as well try to stop the waterfall."