Here's one that's popular in Standard right now: On turn two, the Advocate is a 2/3 with vigilance
It was pretty obviously going to be included, but here's the confirmation if you needed it
This is not a gamer convention where we would have felt more comfortable at the beginning, right
While mana cost is not something I am too bothered about in these ratings that of either Ulamog is sufficiently prohibitive of most decks that it is at the very bottom of this list despite being one of the most nominally powerful cards in all of magic
Its also important to note that Primal Vigor is a symmetrical effect, doubling counter and token creation for your opponents in addition to you
With Goblin lords, token support, and damage multipliers, your board quickly becomes too large for opponents to control