Maraxus, Ruthless Warlord

When Maraxus, Ruthless Warlord enters the
battlefield, create a 3/3 red ogre with haste.
Maraxus, Ruthless Warlord power and toughness
are equal to the number of untapped artifacts,
lands, and creatures you control
{r}, Sacrifice an artifact: Maraxus, Ruthless
Warlord gets +X/+0 and first strike until end
of turn where X is equal to the sacrificed
artifact's converted mana cost.