Dimaris, sheathed but waiting

When Dimaris, sheathed but waiting enters
the battlefield, draw 4 cards. You sacrifice 4 creatures or artifacts.
Equipped creature gets +4/+4 and gains unblockable. Sacrifice the creature at end of turn unless the creature is Che-kai.
Equip {0}
"Behold! My latest creation! A weapon of unmatched power!"