The Irencrag 248 (Wilds of Eldraine)

{T}: Add {C}. Whenever a legendary creature you control enters, you may have The Irencrag become a legendary Equipment artifact named Everflame, Heroes' Legacy. If you do, it gains equip {3} and "Equipped creature gets +3/+3" and loses all other abilities.

NM - $2.50
LP - $2.00
MP - $1.50
HP - $1.50
DMG - $1.50