there were a handful of players using it in day 2 of many major events, but that was nothing compared to the popularity of decks like Lost Box, Lugia VSTAR or Gardevoir ex
Its always nice to have more options, and many Cubes could stand to feature more of them
What competitive formats is Anointed Procession played in
Ive gotten some mileage out of it with leaves-the-battlefield triggers, like on Slithermuse and Nevermaker
I think the main use is to give protection from a removal spell for 2 mana, which I believe is a filler combat trick or mostly a sideboard card
Being able to flip a 15/15 Worldspine Wurm up is a great party trick, but there are other great cards in here like Ashaya, Soul of the Wild, and Aesi, Tyrant of Gyre Strait