Whenever you cast a colorless spell with mana value 7 or greater, you may exile Ugin's Binding from your graveyard
To use it as a win condition the 6/6 body has to survive
If I were to pick Sarkhan, not with the intention of putting it in my deck, but simply so that you won't get it, then I'm counterdrafting
This card was originally expected only to given away with the English language release, but Ichikawa personally advocated for a Japanese version to ensure it reached Japanese players
To wit, there are fewer weird bad cards
But every time a creature you control becomes the target of a spell, regardless if the spell is yours or your opponent's, you get to dish out poison counters