mtg shrine cards card 'The Great Unbinding' explains creature type that player puts X 1/1 green Squirrel creature tokens onto the battlefield Subtype: Shrine, Colors: Green, 6

Card draw like the staple Pawpsicle, Develop Your Brain, and the damage/draw combo of Let The Storm Rage On would fit in nicely

Toxic Pressure with Karumonix **Karumonix, the Rat King** gives all your Rats **toxic 1**, meaning every Rat that connects gives poison counters

Even better, it has the Hideaway ability, letting you dig five cards deep into your deck and tuck away a spell, ready to cast it for free later when you meet a particular criteria: in this case, having three creatures with different powers after you tap Collector's Cage

This is my chance to mention Costume Closet, Chameleon, Master of Disguise and Impostor Syndrome because of all the Spider-Man costumes you see every year