Midnight Clock [Innistrad: Crimson Vow Commander]

Midnight Clock [Innistrad: Crimson Vow Commander]Set: Innistrad: Crimson Vow Commander Type: Artifact Rarity: Rare Cost: {2}{U} {T}: Add {U}. {2}{U}: Put an hour counter on Midnight Clock. At the beginning of each upkeep, put an hour counter on Midnight Clock. When the twelfth hour counter is put on Midnight Clock, shuffle your hand and graveyard into your library, then draw seven cards. Exile Midnight Clock.

you may tap up to two target creatures

Set: Diamond & Pearl: Base Set Type: Lightning Rarity: Common Retreat cost: Colorless

Shatterskull Pass is a pretty distant second

they lose 3 life and you draw a card

Set: Guildpact Type: Creature — Thrull Cleric Rarity: Common Cost: {3}{W} Haunt (When this creature dies

Set: Urza's Destiny Type: Sorcery Rarity: Common Cost: {1}{U} Target player skips their next draw step

the rest goes up in smoke

you're never unarmed

Should one do so

If It's a nonland card

Flashback—Sacrifice a Mountain

and raising morale