Jinazia, the Bloodstained

Equipped creature gets +5/+5 and has trample
and zealous.
At the beginning of combat on your turn, if you payed the Equip-1 cost, sacrifice the equipped creature. If you do, until end of turn Jinazia, the Bloodstained becomes a 7/7 legendary artifact creature, with has hexproof, haste, trample and zealous.
Equip-1 {5} - Equip-2 {7}