There are a lot of decks that arent going to be able to deal with a 6/6 that has protection from everything
Giratina dominates the abstract landscape
Slap: 100 damage A benchwarmer for sure, but the reusable card filtering ability seems fairly good
An aggressive deck racks up many life loss triggers in combat, plus it encourages your opponents to attack each other, which relieves pressure while you intentionally decrease your life total
The Ur-Dragon The Ur-Dragons eminence ability automatically reduces your dragon spells by whether its in the command zone or on the battlefield
Similarly, the machine cleans the nozzles for you, primes the printhead, and performs its own white-ink agitation, so you dont have to worry about anything during extended print sessions