Cards that give +1/+1 counters are great when only your creatures are targets, but if you are trying to help get rid of a particularly annoying creature, you may not want to be giving your opponents creatures permanent bonuses
Contents: 1x Foil Agent of Treachery
Jerren, Corrupted Bishop / Ormendahl, the Corrupter There are better ways to manage the sacrifice creatures, lose life, gain cards, gain life, repeat structure of black decks, but Jerren, Corrupted Bishop is one of the more flexible versions of that
Ozai has flying and indestructible as long as you have six or more unspent mana
Because damage remains marked on creatures until the damage is removed as the turn ends, nonlethal damage dealt to a creature you control may become lethal if that creature becomes untapped or if Adept Watershaper leaves the battlefield during that turn
Winning with this combo is straightforward