It suddenly makes expensive creatures with ETB or attack triggers viable
Aerith Gainsboroughs final ability nods to one of the most stunning moments in video game storytelling
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This helps with typal effects like Elvish Archdruid
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
