mtg champion cards of Stray Souls [Commander Anthology] it deals damage equal to its power to each opponent Champion - MTG Keywords Explained

Each teammate will help in different ways to achieve your goal: build up +1/+1 counters and grow your creatures into the world's most fearsome fighting team

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

SMELLERBEE, REBEL FIGHTER Okay, so Smellerbee is pretty good, right

You can net the cycling trigger to trade with something out of nowhere

Yes, 4 deck(s) using this combo are listed in the Decks with this combo section above

The place where I think it has a solid home though is in the tribal spirits decks in Pioneer and Modern