The most played lifegain Commander is Leisa, Shroud of Dusk, which is very different from Greven, or others like Esper Oloro
[4] the cards are novelties designed to be read, rather than played [3] [5] , and similar to "Grimlock, Dinobot Leader", actually using this card means players must agree on any rule intricacies they come upon themselves
Always double checked
I dont know if those two uses make them worth an include anywhere, but I played Apex Altisaur in Legacy recently, so its entirely possible
White has no shortage of cards with keyword soup like Akroma, Angel of Wrath and the humble Healer's Hawk to outvalue your opponents every combat
The blacklight test is an easy non-destructive way to determine the validity of a Magic card