You have at least three counters on creatures you control.
({4} magic symbol) available.
Steps
Activate Tayam by paying ({3} magic symbol) and removing three counters form creatures you control.
Holding priority, activate Ashnod's Altar by sacrificing Ministrant of Obligation, adding ({C} magic symbol) ({C} magic symbol) .
Ministrant of Obligation dies, creating two 1/1 Spirit creature tokens that enter with vigilance counters on them.
Resolve the Tayam ability, causing you to mill three cards and return Ministrant of Obligation from your graveyard to the battlefield with a vigilance counter on it.
Activate Tayam by paying ({3} magic symbol) and removing three counters from the two Spirit tokens and Ministrant of Obligation.
Holding priority, activate Ashnod's Altar by sacrificing a Spirit token, adding ({C} magic symbol) ({C} magic symbol) .