Darksteel Monolith (743) [Commander Masters]Set: Commander Masters Type: Artifact Rarity: rare Cost: {8} Indestructible Once each turn, you may pay {0} rather than pay the mana cost for a colorless spell you cast from your hand.

or Treasure token

Set: Fourth Edition Foreign Black Border Type: Instant Rarity: uncommon Cost: {U}{U} Counter target spell

Set: Modern Masters 2017 Type: Instant Rarity: rare Cost: {1}{U} Return target nonland permanent you don't control to its owner's hand

Set: Supreme Victors Rarity: Uncommon

Set: Portal Three Kingdoms Type: Creature — Human Advisor Rarity: uncommon Cost: {3}{R} When this creature enters

Set: Doctor Who Type: Instant Rarity: common Cost: {U} Buyback {3} (You may pay an additional {3} as you cast this spell

put a time counter on this enchantment

) If one or more tokens would be created under your control

Set: Kaladesh Promos Type: Enchantment Rarity: rare Cost: {W} Creatures your opponents control enter tapped

Set: Jumpstart 2022 Type: Legendary Creature — Rat Warlock Rarity: mythic Cost: {3}{B} Whenever Ashcoat attacks or blocks

Set: Dragon Rarity: Holo Rare

Set: Eighth Edition Type: Land Rarity: rare Whenever this land becomes tapped