mtg mutate commander deck Ramos, Dragon Engine GOLD SPELLS 5c Magic Custom Any advice for Mutate deck?

//// The Great Work Enchantment Saga (As this Saga enters and after your draw step, add a lore counter.) I The Great Work deals 3 damage to target opponent and each creature they control

Opponents: Arvinox, the Mind Flail, Sigarda, Host of Herons, Gisa and Geralf Starting Hand: Plains, Plains, The Ozolith, Court of Grace, Bishop of Wings, Serra Paragon, Mangara, the Diplomat Starting hand wasn't great as I would need to draw a land to curve out but I had 2 draw cards in hand so I figured it was worth it

Should this happen, however, then this equipment may end up becoming a major threat, especially against slower matchups

Spells you control can't be countered this turn