Memorial to the Titans

When Memorial to the Titans enters the battlefield, draw a card.
{1}, Sacrifice Memorial to the Titans: Create a
1/1 colorless Titan artifact creature token with
flying, deathtouch, haste, hexproof, and lifelink.
{4}: Memorial to the Titans becomes a 4/4
artifact creature with flying, deathtouch, haste, hexproof, and lifelink and loses all other abilities.
Sacrifice it at the beginning of the next end step.