Dialga EXs main attack, Heavy Impact , is sort of underwhelming for 4 Energy as it deals only 100 DMG, especially when Melmetal has the same attack but the latters ability, Hard Coat, makes it take 20 less damage from attacks
This keeps us churning through our deck to find more action and allows us to rebuild our board through removal and wraths and to find as many Zombie lords as possible
Thats a problem in Pauper, because the best deck right now is good ol Mono-Red Burn
(If it would die, exile it instead.) Whenever you surveil, put a +1/+1 counter on Mirko
For "Metaion, the Timelord", and all "Timelord" monsters in Yu-Gi-Oh
Still a great setup play, especially with an Urborg, Tomb of Yawgmoth somewhere on the battlefield, but not one Id rely on in an emergency