Be sure to include cards that can target your creature on other players' turns to maximize Hojo's card draw - remember, Seeker of SkybreakSeeker of Skybreak can target itself to untap and draw a card
The one thing that Hedron Archive has going for it that I like is that you can also cast a Hangarback Walker the turn you cast it
In a four-player game, this adds up incredibly fast, either slowing everyone down or filling your hand
Since the increase lasts for the rest of the turn, you can combine it with other cards that check for toughness stats for even more benefits
While its related to paying costs because of the effect, there is no cost associated with convoke
Its possible that you end up playing first and Land Tax is a dead card for a while, but even then it just takes one opponent sneaking ahead on lands for this to start working its Magic