Combining Mogis with a card like Blood Artist would allow for a player to ensure their opponent loses life every turn, and they consistently gain life making the game an uphill battle for their opponent from the moment Mogis hits the battlefield
Theyre stuck in the active spot, forced to flip a coin and pray
With more card draw, you can control games with cards like Organic Extinction, play huge spells like Wake the Past, and get your big creatures and planeswalkers like Brudiclad, Telchor Engineer and Ugin, Eye of the Storms more reliably
Terra herself has the ability to enter a trance that allows her to fly (at the cost of milling two cards) and whenever she deals combat damage, you may pay additional mana to resurrect creatures from your graveyard
The berries are a nice touch
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