Tester of the Tangential (SOS 69)

Creature — Djinn Wizard • Mana cost: {1}{U} • Secrets of Strixhaven • Uncommon

Increment (Whenever you cast a spell, if the amount of mana you spent is greater than this creature's power or toughness, put a +1/+1 counter on this creature.)
At the beginning of combat on your turn, you may pay {X}. When you do, move X +1/+1 counters from this creature onto another target creature.

Illustrated by Lorenzo Mastroianni.