Treacherous Trapezist is a three-mana Blue 2/3 creature with flying
So all you have to do is put Storm on the battlefield, cast and recast Acererak to venture into Lost Mine of Phandelver as many times as you need, drawing your entire deck, making tons of mana, and draining tons of life in the process
After my initial confusion subsided, I quickly looked up the value of Arlinn
Once you have a few clones on board, you can start casting instants and sorceries with reckless abandon
[[Sephiroth, Fabled SOLDIER]] turns into [[Sephiroth, One-Winged Angel]], granting: Super Nova As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with Whenever a creature dies, target opponent loses 1 life and you gain 1 life. Whenever Sephiroth attacks, you may sacrifice any number of other creatures
The key here is to have a ton of removal and slowly build tokens until your opponent cant overcome them