Big Hero 6 has been a perpetual sleeper hit with Disney Lorcana collectors, so its no surprise to see this Baymax-focused Song from the under-appreciated Azurite Sea Enchanted lineup gaining value
These abilities allow Heliod to fit well in token, constellation, or pillow fort decks
Avacyn's Judgment This fun two-cost sorcery is a 2 damage Arc Lightning with madness though to turn it into a broken X Spell of doom that splits damage massively - like Rolling Thunder
Budget Galadriels Dismissal, if you squint hard enough
So this is clearly designed for one deck archetype, Life Gain, which is the third biggest archetype ever played, and it makes sense in +1/+1 counter decks that have the occasional lifelink dork or Commander or something that gains you life here and there like Akoum Refuge, and then if you have a Selesnya colored power matters build this would help there with things like Anthem effects
And even though she will survive nearly any challenge on your turn, at 3 Willpower, she's going to most likely be easily banished on your opponent's turn