Hallowed Spiritkeeper dies, creating at least four 1/1 Spirit creature tokens that enter with vigilance counters on them.
Activate Ashnod's Altar by sacrificing a Spirit token, adding ({C} magic symbol) ({C} magic symbol) .
Activate Tayam by paying ({3} magic symbol) and removing vigilance counters from three Spirit tokens, causing yourself to mill three cards and returned Hallowed Spiritkeeper from your graveyard to the battlefield.