This can help whittle away at cards with a lot of willpower
Personally, I think its a fun and interesting way to play the game on an unusual axis, though I can see why players wouldnt like to see their beloved cards disappear before their eyes
You can make many tiny slivers and turn them into monsters with slivers like Sliver Legion, Necrotic Sliver, and Lavabelly Sliver
Zetalpa is an admittedly pricey 8 mana for a 4/8 double strike, flying, vigilance, trample and indestructible
Wild Celebrants Now thats what I call a party crasher
However, the fact that more Cats, Elementals, Nightmares, Dinosaurs, and Beasts keep getting printed every year means that I wouldn't be surprised if Kaheera, the Orphanguard ended up being quite strong over the long-term