Erwin, Divine Soul

Wild Magic Surge — Whenever you cast a spell
during your turn, Scry 1, draw 1.
When Erwin, Divine Soul enters the battlefield,
create Sword of Zariel, a red legendary equipment artifact with "Equipped creature gets +1/0."
and equip {5}. If Erwin, Divine Soul should be
equipped with Sword of Zariel, when you cast a
spell, if it's the second spell you've cast this turn,
Transform Erwin, Divine Soul.