If youre using a mono-green deck, then this shouldnt be a problem
Outlaws of Thunder Junction gave us the Greave's at home version in Lavaspur Boots, thankfully the power boost helps offset how much worse ward is as a targeting-deterrent, but it's still several notches below the other two
deck, Robobrain War Mind generates you a bunch of energy, draws cards on attack, and gets bigger as you have more cards in hand
Indestructible permanents is also about as good as it gets in this archetype, not that Knight-Errant needs her ultimate to be strong
Green can hate on counterspells, which are a particular bane of strategies like voltron that focus primarily on producing single big threats, with the help of cards like Prowling Serpopard, Vexing Shusher, Rhythm of the Wild, and the newly printed Destiny Spinner
Pairing Phyrexian Altar or Ashnods Altar with mass token producers such as Plague Vermin makes transforming Sephiroth easy