Card number 17/165 from the Sword & Shield series

While attached, this isn't a creature.) Legendary Creature Artifact - Equipment Jellyfish Draw (CTRL to add secondary) Germs Astrologian's Planisphere Job select (When this Equipment enters, create a 1/1 colorless Hero creature token, then attach this to it.) Equipped creature is a Wizard in addition to its other types and has "Whenever you cast a noncreature spell and whenever you draw your third card each turn, put a +1/+1 counter on this creature." Diana Equip Equipped creature is a Wizard in addition to its other types and has "Whenever you cast a noncreature spell and whenever you draw your third card each turn, put a +1/+1 counter on this creature." Diana Equip Artifact - Equipment Sage's Nouliths Job select (When this Equipment enters, create a 1/1 colorless Hero creature token, then attach this to it.) Equipped creature gets +1/+0, has "Whenever this creature attacks, untap target attacking creature," and is a Cleric in addition to its other types

Yes, the activated ability to transform incubator tokens can be activated anytime you could cast an instant
And definitely a bomb in a Bloomburrow draft
Being able to mill 2 cards is a fantastic way of setting up your graveyard for synchro plays
(2/4/2023) If the permanent that returns to the battlefield has any abilities that trigger at the beginning of the end step, those abilities won't trigger that turn