Spellmorph is a theoretical mechanic that was shown off in the Mystery Booster playtest cards
PLAYED The stamp is a permanent alteration, visually intrusive, and reduces the cards collectible value
Debt of Loyalty doesnt appear to have special synergy with any new cards, so the going theory online is that Debt of Loyalty spiked due to some creator spotlighting it in early August, though we havent been able to track down any one piece of content as the likely culprit
Specifically, these decks will include Characters (Glimmers), Items, and Actions
Illustrated by Mathias Kollros , this card feels very much like Garruk Wildspeaker, after he was cursed by Liliana Vess to effectively become a planeswalking murderer, but in a much smaller scope