Doesnt cast Ugin, the Spirit Dragon, Nissas sorcery ramp spells, or Evolutionary Leap, but great at casting Whisperwood Elemental, Oblivion Sower, and Dragonlord Atarka
For the big nasty threats the difference between a two mana answer and a three mana one is pretty negligible
Reidane, God of the Worthy I like Reidane, God of the Worthy a lot for the new Standard
That creature gains first strike until end of turn
Ezio, Blade Of Vengeance Ezio has not one, not two, but three separate cards, each depicting a different point of his life
A card that creates Treasure tokens can also be helpful, since sacrificing your Treasure to gain mana will also trigger any Artifact death triggers like Judge Magiset Gabarnth's