Hello and welcome to my first shot at truly my own standard brew! (Well, I'm sure abusing landfall is going to be a theme in standard, but this is my take on it and i can at least say developed it independently)
The goal of this deck is to use land based ramp and Ancient Greenwarden to abuse landfall triggers. In this brew in particular, the primary triggers that we're abusing are going to come from Fearless Fledgling, Felidar Retreat, and Nissa of Shadowed Boughs.
In all honestly, this plays like a mono-green, or maybe even Simic Ramp deck that just happens to be splashing the rest of the colors, however, the mana fixing provided by Cultivate, Roiling Regrowth, Lotus Cobra, and Dryad of the Ilysian Grove actually make 5 colors more than obtainable consistently.
Besides that, my only current concern for this deck right now is a lack of removal, and Song of Creation. The extra land per turn is super nice when you have Ancient Greenwarden out, but it doesn't really shine on its own, along with the obvious discarding your hand. It's very hit or miss always being in top deck mode with it out, but besides Uro, Titan of Nature's Wrath and Ugin, the Spirit Dragon, its the only form of card advantage.
Any feedback or advice would be appreciated here! Thanks for reading and don't forget to leave a comment or an upvote!
