Limited MVP
I assume there's some way to discard for value or maybe just hit delirium at instant speed or something to make this worthwhile, but I haven't really seen the whole set. It does seem like it could be a high pick depending on how things shake out.
Even without discard value. Just the threat of throwing a surplus land to turn it into a 4/4 at instant speed lategame can strongly influence a game.
At that point it's just a 4/4 for 4 mana, which is on rate these days, but you spent two cards on it. If your opponent isn't treating this as a 4/4 when you have 3 mana up and a card in hand, then they're probably misplaying.
That's the catch though. You're opponent has to be prepared for your vanilla 1/1 nothing to become a lethal threat to their creatures, or beat in their face.
This card will suck removal towards it because of potential, instead of anything it's actually doing.
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