Treizeci, Sun of Serra (1) [2022 Heroes of the Realm]

Companion — Your starting deck contains only nostalgic cards. (Retro frames, legends, and artifacts are nostalgic.) Vigilance Whenever you cast a nostalgic spell, you may pay {2}. If you do, put a +1/+1 counter on Treizeci, then for each +1/+1 counter on it, create a Serra Angel token.