Get big minions and hit people in the face! Cryonic potential gives a huge amount of stats and can easily get out of control if you highroll.
BTA, Sister, Well, Potential, Luminous, Forger, and Reinforcement are absolutely core for the deck. They give excellent utility and power to combine with each other. BTA is the best 1 drop available to Vanar, allowing you excellent board control to kill minions/eggs/seekers, and makes an excellent target for potential. Forger is a vital 2 drop that helps ramp your many spells and lets you cast potential on it with 4 mana. Sister is just excellent in general with plenty of utility, while the best wall spells are used to carry buffs.
Mentor and Sojourner are fat 3 cost bodies that help serve as card draw, while Circulus and Crypto are other potentially useful 2 drops. Wyrm helps supplement sister to provide reach. Heralds could potentially be used to help stave off burn.
I actually only played 3 games with it in S, but itsss 3-0 Now go and highroll some faces in.