Planeswalkers are a whole other story
Loading Shonen TCG General The OP-16 Rosinante deck is the one I've been waiting to write about
They are what make this genre work
Part of a cycle that features the almost-as-broken Gaea's Cradle and somehow the hilariously unbroken Shivan Gorge, Tolarian Academy taps to make a mana for each artifact you control, which led to decks that would dump their entire hand of cheap artifacts, make a ton of mana by tapping and maybe untapping Tolarian Academy, and then use big card-draw spells like Windfall and Stroke of Genius to refill before eventually milling the opponent out with Stroke of Genius, potentially all on Turn 1
You'll also probably want to run some birds with flying, so it is easier for you to attack and activate Choco, Seeker of Paradie's ability
You can reduce Elsas Ink cost to 6 by using Shift, which is sort of like evolving Pokemon, in that youll need to put this Elsa on top of a different Elsa card when played