All three of its modes are strong: destroying an artifact is always good, and paralyzing blockers can help get damage through
Pokmon still put in their really bad evolution lines, giving the Typhlosion line a 4-3-1 build
Im happy to show those decks off
If you transform an Incubator the same turn it enters the battlefield, the transformed Phyrexian creature will have summoning sickness and not be able to attack
Expect to see this a lot with Embercleave while it lasts, and in Commander, youd be daft not to try it in an Equipment build
With a ward effect of sacrificing a creature, Vein Ripper was so good in formats like Pioneer and Explorer, that it caused Sorin, Imperious Bloodlord to get banned since the planeswalker could cheat out the Vampire as early as turn three