If you gain control of an equipped creature, the equipment is still attached, but you dont control the equipment itself
Boros has plenty of other cool stuff you could run with this
AncestralMTG has one of the best selections of dual lands online at competitive prices
We're also replacing Heihei, Protective Rooster with Chien-Po - Imperial Soldier, trading one lore for two Willpower
Based on the data I do have, it seems to be between 0.5 and 0.55 Mythics you can take per draft, though it should decrease as you get closer to the Mythic Point
Agathas Soul Cauldron Gameplay This two-mana artifact is the engine of the formats top deck, Izzet Cauldron, which has 41 percent of the winners metagame