Dyrroth
In the S7 commander rosterLevel 1
Abyssal Devourer: From Round I-4, Dyrroth can devour a 1-Star Hero every 3 round(s) and return a Hero with higher quality (Gold cost +1, max 5-Gold).
Level 2
Abyssal Favor: Dyrroth gains 2 Commander EXP per devour. After every 2 devour(s), the next devour grants 2 Heroes, each sharing one Synergy as the devoured one. (Devouring 5-Gold Heroes grants 2 random 5-Gold Heroes.)