Phyrexia Arena is currently Standard-legal, but it doesnt see any real play
If you cut a key creature hit on that first big flip with Surgical Extraction they are far from assured to be able to find the pressure they need to close
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Avacyn, Angel of Hope: Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a creature you control may become lethal if Avacyn leaves the battlefield during that turn
Wound Reflection, Warlock Class, Bloodletter of Aclazotz, and anything worded like this doubles your damage, which is sometimes enough to one-shot players with commanders like Heartless Hidetsugu or Alpharael, Stonechosen
Cabaretti Ascendancy isnt as flashy as many other cards this high up, but its here for good reason