Karn, Scion of Urza [Mythic Edition] 45 create a 3/3 blue Serpent

create a 3/3 blue Serpent creature token named Koma's Coil

Whenever you cast a noncreature spell

[When Digivolving] When DNA digivolving

reveal Blightsteel Colossus and shuffle it into its owner's library instead

Threshold — Nim Mongoose gets +1/+0 for each artifact you control as long as seven or more cards are in your graveyard

Karn, Scion of Urza [Mythic Edition] 45 create a 3/3 blue SerpentSet: Mythic Edition 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."