What it does
Multikicker is an optional additional cost you can pay any number of times as you cast a spell. Each time you pay it, the spell gets a bonus—often more counters, more tokens, or a bigger effect. You declare how many times you're paying it while casting, and the costs are locked in then.
The big rules nuance: multikicker is paid during casting, so the number of times you kicked is fixed on the stack and can't be changed later. Also, "you may pay" means it's never mandatory, and effects that count whether a spell was kicked treat any number of kicks (including zero) appropriately—it was either kicked or it wasn't.
In Commander, multikicker shines because you tend to have tons of mana in the late game. Cards like Rite of Replication (creates five copies when kicked) or scalable creatures let you dump excess mana into game-ending value, making them flexible early and explosive late.













