Murktide Regent (Sketch) [Modern Horizons 2] 40 you may spend mana as

you may spend mana as though it were mana of any color to cast it

as well as bonus points based on the location of the room

except it's 1/1

squirrel elders tell tales of the fabled Nut Hoard of the Fallen Oaks

Set: EX: Holon Phantoms Type: Item Rarity: Uncommon

Murktide Regent (Sketch) [Modern Horizons 2] 40 you may spend mana asSet: Modern Horizons 2 Type: Creature Dragon Rarity: Mythic Cost: {5}{U}{U} Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Flying Murktide Regent enters the battlefield with a +1 +1 counter on it for each instant and sorcery card exiled with it. Whenever an instant or sorcery card leaves your graveyard, put a +1 +1 counter on Murktide Regent.