Swampwalk is very situational, but gaining life from your opponents black spells is neat
Commissar Severina Raine has the same effect, but is objectively better, as it triggers for each opponent, not just the ones the creature is attacking
There are currently three kinds of Lorcana cards in the TCG: Characters - used for challenges and quests, and often feature unique abilities Items - stay on the board and offer special effects Actions - a one-off card that activates a special advantage and then gets discarded Actions also have one sub-type that's worth being aware of - Songs
If for some reason you are playing primarily super top end with a lot of entirely colourless cards among them then Channel is a good support card to help you improve your odds on getting some of those things into play
While its not as sassy as Gwenom, its certainly still a great design dripping with flavor
Bouncing a damaged Kronk or The Prince, Never Gives Up can be a great way to heal them so they can be played again, while bouncing a shifted Hercules or Cinderella will always give you two cards back, and even allow you to add one of them to your inkwell if you're in a position to play the Floodborn card for full price