Gruerra, Creature Halfer

Equipped, Combined, and Enchanted creatures
you control get +0/+1.
{3}{b/r}{b/r}{b/r}, {t}: Put two target creature
cards from graveyards onto the battlefield
combined into one creature under your control.
(Its power is equal to one of theirs, Its
toughness is equal to one of theirs, it has their names,
mana costs, types, text boxes, etc. Though, you may
exclude any letters, numbers, symbols, etc.)