Karn, Scion of Urza (Promo Pack) [Dominaria Promos] Explorers of Ixalan Whenever you cast an enchantment

Whenever you cast an enchantment spell

Tap an untapped artifact you control: Add {U}

Set: Champions of Kamigawa Type: Legendary Creature — Human Monk Rarity: Rare Cost: {1}{G}{G} Players can cast spells only during their own turns

Generations of genetic weeding have given rise to the deviously cowardly Ironclaw clan

"Recantation"

Karn, Scion of Urza (Promo Pack) [Dominaria Promos] Explorers of Ixalan Whenever you cast an enchantmentSet: Dominaria Promos Type: Legendary Planeswalker Karn Rarity: Mythic Cost: {4} +1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it. 1: Put a card you own with a silver counter on it from exile into your hand. 2: Create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control."