Heavy Mech Oravitus

+16: If this card would be destroyed, draw four cards instead, then immediately activate this card's final ability.
+4: When this card is attacked, send cards from your deck equal to the amount of damage it would take instead. Only use this effect once per turn.
+16: If this ability has been reached by being Boosted, This card's power becomes 14. Otherwise, send this card to the Lost Zone.