The problem comes in when you try and get keywords that aren't as common in red or white, like deathtouch
Making your frogs tap for many means that you'll be able to recast the creatures you bounce with Clement's ability more often, and if you're getting some sweet ETB value, that's pretty strong
Based on the promo images from the set and the card folio having half as many cards per page as the standard-sized slots, it looks like the oversized cards are twice the size of normal cards
Chthonian Nightmare The floor with Chthonian Nightmare is reanimating a 3-drop, which isnt good enough for Modern
Anytime a creature that was face-down and was turned face up on your turn deals combat damage to a player, you get to draw a card, which is fine value over the course of a game
By opening packs, of course