Activate Ashnod's Altar by sacrificing Fearsome Goblin Pair, adding .
When Fearsome Goblin Pair dies, it creates a creature token with at least three counters on it, including a vigilance counter due to Tayam.
Activate Tayam by paying 3 and removing two counters from the creature token and one counter from another creature you control, milling three cards and returning Fearsome Goblin Pair from your graveyard to the battlefield with a vigilance counter on it.
Activate Tayam again by paying 3 and removing a vigilance counter from Fearsome Goblin Pair and two counters from the creature token.
Holding priority, activate Ashnod's Altar twice by sacrificing Fearsome Goblin Pair and the creature token, adding .
When Fearsome Goblin Pair dies, it creates a creature token with at least three counters on it, including a vigilance counter due to Tayam.
Resolve Tayam's ability, milling yourself three cards and returning Fearsome Goblin Pair from your graveyard to the battlefield with a vigilance counter on it.