Do You Know Any MTG Cards like Biomass Mutation?

I just built an Edric, Symaster of Trest commander deck, but I only put one win condition in it, Biomass Mutation which pumps all of my weenie evasive creatures and I deal massive damage.

I need more cards like that, that buffs all creatures. The obvious one I’m going to get is Beastmaster Ascension but I preferably would have 5 or 6 win cons in this deck.