Raubahn, Bull of Ala Mhigo

Ward—Pay life equal to Raubahn's power.
Whenever Raubahn attacks, attach up to one target Equipment you control to target attacking creature.

Ruby Medallion

Red spells you cast cost {1} less to cast.

{T}: Add one mana of any color in your commander's color identity.

Equipped creature gets +10/+10 and loses flying.
Equip {8} ({8}: Attach to target creature you control. Equip only as a sorcery.)

Jump — During your turn, Freya Crescent has flying.
{T}: Add {R}. Spend this mana only to cast an Equipment spell or activate an equip ability.