My response is that the Psionic Gift-type tricks were only necessary because poison is so bad
At most, this can be a powerful tool against specific matchups but wont help you win games consistently, which is something other Supporter cards just do a lot better
Any creature that comes under your control has summoning sickness the turn you obtain control of it, even if it was a non-creature permanent before becoming a creature (thats why even vehicle commanders have summoning sickness, too)
Also features a potent ability to draw cards late in the game: for five generic and one blue and a tap, sacrifice Blighted Cataract to draw two cards
Controlling four or more legendary creatures is quite hard to do, even in a set with as many legends as Final Fantasy
Later, your commander can retrieve the most important pieces from the graveyard once theyre gone