The Angel is very strong in that oeuvre of defending, and like the Mother of Runes tapping, it cannot be blocked save by colorless and flying stuff and it's bigger there too, so it's a game winner connected to a defensive all-star ability
This card does absolutely everything
Knights have been getting a lot of deserved support lately, with Valiant Knight and (unofficially) Kwende, Pride of Femeref joining the fray with Knight Exemplar and Kinsbaile Cavalier
Great for kids, and anyone that is limited to using only 1 hand to shuffle
Also, Corpse being a value engine in grindy games was solid, so there is potentially something here, but it will take some tuning
If we have so many Phyrexians, why not compleat our other cards with Encroaching MycosynthEncroaching Mycosynth and Liquimetal TorqueLiquimetal Torque