Where she really shines is in her ability, which says that whenever she attacks, her controller may put an Angel, Demon, or Dragon creature card from their hand directly onto the battlefield, tapped and attacking the same opponent Kaalia was attacking
It hard locks you into those colors and youre going to skew your decisions based around a multicolor card you might not even draw during any of your games
Not every deck wants a three-mana rock (green certainly has more efficient effects), but this one does enough to stand out
They'll land in a heads or tails slot
(Alpha cards) A Magic card does need to have the dimensions of a regular Magic card in order to be tournament-legal (as oversized/mini-cards are not tournament legal)
It destroys anything at instant speed for three mana save for lands and just leaves them 1/1 grounded Human in exchange