Mulldrifter A 2/2 flying dude and 2 cards for 5 mana is pretty good
When I built an EDH deck with it (pre-Commander), I had a lot of fun, but early in the format it was a bit of a boogeyman and would often get hated on with all the removal your opponents could throw at it
Battlesphere will 2 shot an undefended player applying a possible 12 damage per attack although more typically it will more slowly grind out an advantage in combat rather more like Hornet Queen
Phlage, Titan of Fires Fury One of the cooler bits of tech I came across for Modern Horizons 3 s Phlage, Titan of Fire's Fury was Altar of Dementia
4 Yawgmoth, Thran Physician As one of the best black commanders printed in Magic, Yawgmoth, Thran Physician put most other proliferation abilities to shame
They work so well every game I've drawn them