As a card with a serious Legacy pedigree, it's always a piece or two away from becoming part of an extremely obnoxious combo
I still run Honden of Seeing Winds in tons of places, not even with Shrines
See if you can't figure out how many mana total, and which specific kinds, it takes to summon the following card: The Answer: The first card, (Sylvan Bounty), costs 5 generic manamana of any kind you want along with one green manamana produced by a forest, for a total of six mana
Whatever direction you take The Mycotyrant, whether it's crusty old Fungus cards from nearly 20 years ago, a highly tuned combo deck loaded up with tutors or something in between, I hope if you build around this card you're able to get it to do what you want
All you need to do is buy the Lorcana Gateway kit
Basically, unless youre specifically building a cEDH deck with the intent of it being played in that context, your deck is not a cEDH deck