If a player casts a Blighted Agent on turn two, and then casts three Giant Growth type spells on it on turn three, Blighted Agent can immediately end a game if not answered
For the additional content, the Ursula's Return Illumineer's Trove sticks to the revised approach of the Into the Inklands version, which cuts the game tokens, deck boxes, and player's guide of the first two versions in favor of some other options
This just adds up so fast, just think of your favorite token maker and turn that non combat damage way up, and the best part, if you're locked out of combat, this can still win you the game
Poison had a favorable matchup against Fairy, thus lifting it off the basement and making it somewhat viable after a decade and a half