Etrata, the Silencer [Guilds of Ravnica]

Etrata, the Silencer [Guilds of Ravnica]Set: Guilds of Ravnica Type: Legendary Creature Vampire Assassin Rarity: Rare Cost: {2}{U}{B} Etrata, the Silencer can't be blocked. Whenever Etrata deals combat damage to a player, exile target creature that player controls and put a hit counter on that card. That player loses the game if they own three or more exiled cards with hit counters on them. Etrata's owner shuffles Etrata into their library.

Waker of Corpses enters the battlefield with a number of +1/+1 counters on it equal to the amount of mana spent to cast it

you lose the game

Set: Beta Edition Type: Creature — Vampire Rarity: Uncommon Cost: {3}{B}{B} Flying (This creature can't be blocked except by creatures with flying or reach

or run around like crazy

Set: Eldritch Moon Type: Creature — Dragon Rarity: Mythic Cost: {3}{R}{R} Flying

put a -1/-1 counter on Ammit Eternal

Set: Dominaria Type: Legendary Creature — Elf Warrior Rarity: Rare Cost: {2}{R}{G} Haste

Set: Champions of Kamigawa Type: Creature — Spirit Rarity: Uncommon Cost: {1}{U} Whenever you cast a Spirit or Arcane spell

Set: Tempest Type: Instant Rarity: Uncommon Cost: {1}{B}{R} As an additional cost to cast this spell

target creature you control becomes a blue and red Dragon with base power and toughness 4/4

Set: Legends Type: Artifact Rarity: Rare Cost: {4} {2}

"The union of sea and sky makes a perfect cover