Tangleroot [Mirrodin]Set: Mirrodin Type: Artifact Rarity: Rare Cost: {3} Whenever a player casts a creature spell, that player adds {G}. As if there's glitch in the system, the Tangle sometimes folds in on itself, throwing off sparks of mana in a mystifying display.

They likely refer not to one mage

Set: Fifth Edition Type: Creature — Demon Rarity: Rare Cost: {3}{B}{B} At end of combat

"I am not afraid to die today nor afraid of what death will bring

Sacrifice a creature

Set: Sun & Moon: Team Up Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

the mages of the Goma Fada caravan have learned ways to harness both life and death

(They're affected by summoning sickness

Set: Sun & Moon: Shining Legends Type: Fire Rarity: Secret Rare Retreat cost: Colorless

that exciting

Set: XY: Evolutions Type: Water Rarity: Holo Rare Retreat cost: Colorless

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{G}{G} Sacrifice a creature: Draw cards equal to the sacrificed creature's power

Set: XY: Trainer Kit 1 - Wigglytuff Type: Supporter Rarity: Promo