Etherium Spinner
Artifact Creature — Human Wizard
Whenever you cast a spell with mana value 4 or greater, create a 1/1 colorless Thopter artifact creature token with flying.
"Thopters from a foundry always lack that personal touch."
2/1
Illustrated by
Modern Horizons 2#40CommonEnglishLegality
Rulings
Jun 18, 2021
If a spell on the stack has 
in its mana cost, X is the value chosen for it when determining that spell’s mana value.