Karn, Scion of Urza [Dominaria Prerelease Promos] Basic Psychic Energy Sacrifice Glen Elendra Archmage: Counter

Sacrifice Glen Elendra Archmage: Counter target noncreature spell

if it's your main phase

you'll have to do better than that

" —*The Discoveries of Feldon*

that player instead puts that land onto the battlefield then sacrifices a land

Karn, Scion of Urza [Dominaria Prerelease Promos] Basic Psychic Energy Sacrifice Glen Elendra Archmage: CounterSet: Dominaria Prerelease 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."