Mnemonic Betrayal [Guilds of Ravnica]Set: Guilds of Ravnica Type: Sorcery Rarity: Mythic Cost: {1}{U}{B} Exile all opponents' graveyards. You may cast spells from among those cards this turn, and you may spend mana as though it were mana of any type to cast those spells. At the beginning of the next end step, if any of those cards remain exiled, return them to their owners' graveyards. Exile Mnemonic Betrayal.

Set: Alpha Edition Type: Instant Rarity: Common Cost: {U} Return target creature to its owner's hand

Set: Modern Masters 2015 Type: Legendary Creature — Phyrexian Praetor Rarity: Mythic Cost: {5}{W}{W} Vigilance

{W}: Questing Phelddagrif gains protection from black and from red until end of turn

War favors the informed

or enchantments

Set: Unlimited Edition Type: Enchantment — Aura Rarity: Rare Cost: {W}{W}{W} Enchant land

you may sacrifice any number of creatures

Set: Commander Anthology Type: Creature — Elf Shaman Rarity: Common Cost: {G} Whenever another creature enters the battlefield

The seed of a world's evil

You may reveal a creature card from among them and put it into your hand

Set: Alpha Edition Type: Sorcery Rarity: Common Cost: {X}{G} Target player gains X life

they trenched