Mirror March [Ravnica Allegiance Prerelease Promos]Set: Ravnica Allegiance Prerelease Promos Type: Enchantment Rarity: Rare Cost: {5}{R} Whenever a nontoken creature enters the battlefield under your control, flip a coin until you lose a flip. For each flip you won, create a token that's a copy of that creature. Those tokens gain haste. Exile them at the beginning of the next end step.

{T}: Shadow Guildmage deals 1 damage to any target and 1 damage to you

"The empire belongs to no one man but to all in the empire

where X is the number of cards in their hand

Set: Commander 2014 Type: Sorcery Rarity: Rare Cost: {X}{U}{U}{U} Return X target nonland permanents to their owners' hands

Set: Magic 2011 Type: Land Rarity: Rare {T}: Add {C}

except it doesn't copy that creature's color and it has this ability

Whenever Sidar Jabari attacks

Set: Commander 2015 Type: Legendary Creature — Angel Rarity: Mythic Cost: {3}{R}{W} Flying

Set: Betrayers of Kamigawa Type: Legendary Enchantment Rarity: Rare Cost: {3}{W} Legendary creatures you control get +2/+2

"To death all must go

For example

Set: Shards of Alara Type: Creature — Specter Rarity: Rare Cost: {U}{B}{R} Flying