Andrios, Roaming Explorer (PH21 1)

Legendary Artifact Creature — Wizard • Mana cost: {5}{G} • 2021 Heroes of the Realm • Mythic

Reach
As long as Andrios is attacking, tapped creatures you control with base power and toughness 4/3 have base power and toughness 16/9.
{T}: Add {W}{U}{B}{R}{G}. Creature spells you spend this mana to cast have their base power and toughness become 4/3.

Illustrated by Borja Pindado.