It triggers when you flicker an artifact or make an artifact token, and its pretty easy to do those things on opposing turns to draw more than one card a turn cycle
Polymorph Variant: Key Differences The Polymorph Version sacrifices the creature base to focus on a single creature win condition[[Hullbreaker Horror]] (or [[Tidespout Tyrant]])
(Having hit $30 earlier in the season, Ojutai now looks like a solid pickup for the fall if decks that want him can figure out how to get around the sacrifice effects that have rendered him less effective.) The only other cards I offered up as solid picks were Zurgo, Bellstriker and Sidisi, and both saw some good early play before falling off the side of the metagame
Finally, there are the finishers like Katilda, Dawnhart Martyr, and Michiko's Reign of Truth, which grant other creatures or themselves +1/+1 for each enchantment
I tried to keep things within reason, but there are powerful options for anyone looking to take it a step further
It's pretty cracked if it stays in play for any amount of time