The Classics Some ramp spells see more play than most, and theyre generally seen as auto-includes in most decks
While this card comes with an automatic Regrowth and is a huge creature, you want a bit more out of your 9-cost creature that also costs this much money
Similarly, if you haven't both gained and lost life during the turn when your end step begins, Lunar Convocation's second ability won't trigger at all
The reason people cared about Zuran Orb is that there was Balance and Land Tax and Tithe and shit that let you get card advantage for having less land than your opponent, so being able to spend nothing and gain a bunch of life to pop your lands out of play at a moment's notice was a pretty big deal
Diversion Unit Diversion Unit is one of those creature-counterspells that is occasionally as good as Glen Elendra Archmage, but significantly worse in most cases
Then, for four mana, you can tap it to put a shadow (a creature with shadow can only block or be blocked by creatures with shadow) counter on a creature, which becomes a wraith for as long as it has that counter