Over two turns, you get three +1/+1 counters on everything you control, or more if you can pump the Ouroboroid before combat
This starts a trend that affects basically all of the Tarkir: Dragonstorm new abilities: they were printed only on a handful of cards, which makes them artificially niche and obscure
Is Plot an Alternative Cost
Which isn't completely boring, and it's at least somewhat different, but it also means that the entirety of their creature loadout this expansion are all humans
That's what sites like TCGPlayer are great for, finding single chase cards, at the best price possible, and not having to spend thousands on sealed packs with overinflated prices
This has caused the limited edition Pokemon cards to be a bit more difficult to come by, meaning a lot of kids are not able to get their hands on the pack and the prices are skyrocketing online