On the topic of playing cards for free, we have a brand new Belle in Sapphire, Belle Apprentice Inventor
However you untap Yuna, there are plenty of support pieces to improve the potency
Anowon, Ruin Thief will slap Krydle straight in, and a two-drop with high synergy that makes Anowon unblockable is just what the deck wants
Worst Stitch Experiment 626 is a 3-cost ramp card that adds one exerted card to both players inkwell
The Ancient Metal Dragons Ancient Copper Dragon Ancient Brass Dragon Ancient Silver Dragon Ancient Gold Dragon Ancient Bronze Dragon These five Dungeons & Dragons inspired dragons are all fairly powerful, and they also get significantly better with haste to get that saboteur effect right away
After all the card effects are resolved, then the card is discarded