You remove a counter to fire upon your own siege engine, and Gatta and Luzza turns that damage into a new counter instead
Making changelings is also a big deal, letting you use this as a synergy card for some lesser typal decks like spiders, minotaurs, and so on
While the card is gone you gain a role that allows you to draw an extra card at the beginning of your end step, and do so until a creature does damage to you
The likes of Jade Bearer, River Heralds Boon, and Deeproot Elite help it become a 4/4, 5/5, or 6/6 threat that you cant target for removal
This can cause them having increased weight or the corners being different from an original one
EDGE OF ETERNITIES: MULTICOLOR Biotech Specialist is a solid ramp option for decks like Meria, Scholar of Antiquity or Roxanne, Starfall Savant