I expect Ishkanah, Grafwidow to make appearances in delirium decks, especially in those playing Traverse the Ulvenwald
No matter what benefit you receive, the keyword triggers "if you gained life this turn." These two cards with the mechanic (I paired the image above with their mascot, as we only saw two cards with Infusion) show different ways you benefit from having gained life
As one might expect, there are a lot of Mice, Rats, and Squirrels in Bloomburrow (although only a single Hamster, and it's confusingly called a gerbil)
If you have either Ajani, Strength of the Pride or Angel of Destiny in play, those huge life gains are going to turn into either massive card advantage or outright defeat for your opponents
Other roleplayers in that deck were Elvish Warmaster and Gala Greeters for a very token-focused variant on Elves
Ultimately, while this scenario does feel likely, theres no guaranteed when, or even if, itll actually happen