Goblin Tower

Goblin Tower enters with 3 time counters.
At the beginning of your upkeep remove a time counter. When Goblin Tower doesn't have any
time counters on it, it becomes a 4/4 Artifact
creature with Defender. Goblin Tower also gains
the following abilities:
Goblin creatures you control get +1/+1.
{1}{r}, {t}: Create a 1/1 red Goblin with Haste.