These decks dont quite have what it takes in Modern at the moment, but Rosie is a great addition to any EDH food deck
So, it can be a handy card for players looking to fill their graveyard for a resource or reshuffle their hand a bit
Its level 1 is quite basic: it just creates a 1/1 Otter token with prowess
Green Always Play: Bala Ged Recovery, Tangled Florahedron, Turntimber Symbiosis, Khalni Ambush, Kazandu Mammoth
Card advantage that rummages and wheels like Unexpected Windfall and Imposing Grandeur are your best friends, both to fill the graveyard for cost reduction and to make sure you have enough cards to reliably trigger Eris
Equip it to a Godo, Bandit Warlord and you'll have infinite combat steps, or you can equip it to a Timestream Navigator for unlimited extra turns