"Have I finally done it? Have I finally freed myself from failure?"

Determined Iteration

At the beginning of combat on your turn, populate. The token created this way gains haste. Sacrifice it at the beginning of the next end step. (To populate, create a token that's a copy of a creature token you control.)

"Only a fool believes they have nothing left to learn."

Secrets of Strixhaven Commander

New Capenna Commander

New Capenna Commander Promos

At the beginning of combat on your turn, populate. The token created this way gains haste. Sacrifice it at the beginning of the next end step.