Think cards like Timberwatch Elf, Llanowar Elves, Heedless One, Wirewood Hivemaster - all fairly accessible cards
If we have the power to destroy Cocoon, then we have the power to save it. 2/2 Illustrated by Fariba Khamseh Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Turning a combined host/augment creature over will result in a big colorless 2/2 creature represented by two cards
You won't always be able to get both Madam Mim and Fairy Godmother to stick on the board long enough to pull this off, but with their reduced Shift cost of three and two-ink respectively, you'll likely get both of them down on the board at the same time fairly often
I walked you through the design of most of the mechanics
This is often accomplished by pitching Progenitus to Blazing Shoal for a +10/+0 buff at no mana cost whatsoever, guaranteeing lethal on the spot if the opponent has no blocker