Once on the battlefield, Gandalf rewards a spellslinger strategy, growing larger whenever you cast a noncreature spell while pinging each opponent for one damage
Karn, the Great Creator might be controversial if your group leans heavily on artifact mana sources, but I actually have it here for the other two abilities: making artifacts into creatures lets Satya copy them, and the normally-dead wish activation can actually be used to loop Gontis Aether Heart, assuming you can proliferate enough loyalty and energy counters to keep that going
Even if Satoru leaves the battlefield before it resolves, you'll still be able to put the creature onto the battlefield tapped and attacking
Even more exciting is that every single card in the 30th Celebration set will be a foil, even the Basic Energy cards
It does Balance lands, but Im not convinced thats worth four extra mana and telegraphing like youre aboard the sinking Titanic, especially since land-ramp decks love running ways to play lands from their graveyard
Tune in next week, when we turn Melira, the Living Cure into a corpse for being antithetical to the Phyrexian cause