Karn, Scion of Urza (Promo Pack) [Dominaria Promos] Angel Illusion Goblin creatures you control get

Goblin creatures you control get +1/+1 until end of turn

Set: Beta Edition Type: Creature — Rat Rarity: Common Cost: {2}{B} Plague Rats's power and toughness are each equal to the number of creatures named Plague Rats on the battlefield

elder researcher

so grows my strength

and it isn't legendary if that permanent is legendary

Karn, Scion of Urza (Promo Pack) [Dominaria Promos] Angel Illusion Goblin creatures you control getSet: 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."