Colfenor's Urn [Lorwyn]

Colfenor's Urn [Lorwyn]Set: Lorwyn Type: Artifact Rarity: Rare Cost: {3} Whenever a creature with toughness 4 or greater is put into your graveyard from the battlefield, you may exile it. At the beginning of the end step, if three or more cards have been exiled with Colfenor's Urn, sacrifice it. If you do, return those cards to the battlefield under their owner's control.

Their impression of grace fades when the first gust sends them crashing into one another

Set: Mirrodin Type: Artifact Creature — Bird Rarity: Common Cost: {4} Flying

Set: Fifth Edition Type: Enchantment — Aura Rarity: Common Cost: {U} Enchant creature

Set: Shadows over Innistrad Type: Artifact — Equipment Rarity: Uncommon Cost: {1} Equipped creature has skulk

When Demanding Dragon enters the battlefield

Set: Legends Type: Instant Rarity: Common Cost: {G} Prevent all combat damage that would be dealt by target creature this turn

Mathmech from Mystic Fighters

When Jötun Owl Keeper dies

Set: Time Spiral Timeshifted Type: Creature — Beast Rarity: Rare Cost: {4}{G} This spell can't be countered

Enchanted creature has "{T}: Create a token that's a copy of this creature

The token has enchant permanent and totem armor

Set: Kaladesh Prerelease Promos Type: Artifact Rarity: Rare Cost: {4} Whenever you cast a spell