Nadier, Agent of the Duskenel

Whenever a token you control leaves the battlefield, put a +1/+1 counter on Nadier. When Nadier leaves the battlefield, create a number of 1/1 green Elf Warrior creature tokens equal to its power. Partner (You can have two commanders if both have partner.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o9wg76k7vpb1hpr623sjo.