Karn, Scion of Urza [Dominaria Prerelease Promos] Astral Pack 7 Whenever the Llanowar elves gather

Whenever the Llanowar elves gather the fruits of their forest

Special Summon 1 Level 4 or lower "Elemental "Hero" monster from your Deck

Set: Genesis Impact Card type: Link/Effect Monster Rarity: Collector's Rare Attack: 1800

but this effects are negated

Karn, Scion of Urza [Dominaria Prerelease Promos] Astral Pack 7 Whenever the Llanowar elves gatherSet: 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."