The healing aspect is heavy, but theres not much benefit from it that turns into a win
The Confluence costs a massive six mana and three in colors, but you can goad one player's stuff three times, so it's Disrupt Decorum in a four player game, or you can use it as removal of a -3/-3 nature up to three times, which will kill indestructible stuff and not exile them so you can recur them later or you can Regrowth a sorcery/instant up to three times
Unfortunately, that's a very specific use case that doesn't just need a deck built around it, it also needs a special situation within said deck
If youve got a five-color good stuff deck, perhaps headed by Kenrith, the Returned King, or Garth One-Eye, then Invasion of Alara is certainly a spicy card to include
Still would like to give it a go in something like 8 whack though