Goldspan Dragon [Kaldheim Prerelease Promos] Guardian Set: Welcome to Rathe Edition:

Set: Welcome to Rathe Edition: Alpha Print Finish: Rainbow Foil Type: Instant Rarity: Rare Class: Generic Cost: 0 Gain 3 [Life]

and Serpents

Set: McDonald's Promos: 2018 Collection Type: Psychic Rarity: Promo Retreat cost: Colorless

you may exile a black card from your hand rather than pay this spell's mana cost

Goldspan Dragon [Kaldheim Prerelease Promos] Guardian Set: Welcome to Rathe Edition:Set: Kaldheim Prerelease Promos Type: Creature Dragon Rarity: Mythic Cost: {3}{R}{R} Flying, haste Whenever Goldspan Dragon attacks or becomes the target of a spell, create a Treasure token. Treasures you control have "{T}, Sacrifice this artifact: Add two mana of any one color."