Activate Ashnod's Altar twice by sacrificing Tenacious Tomeseeker and Ministrant of Obligation, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) .
When Tenacious Tomeseeker and Ministrant of Obligation die, Pitiless Plunderer triggers twice, and Ministrant of Obligation triggers once.
Resolve both Pitiless Plunderer triggers, creating two Treasure tokens.
Resolve the Ministrant of Obligation trigger, creating two 1/1 Spirit creature tokens.
Activate the Treasures by tapping and sacrificing it, adding ({U} magic symbol) ({B} magic symbol) .
Cast Back for Seconds by paying ({2} magic symbol) ({B} magic symbol) , and choosing to pay its bargain cost by sacrificing a Spirit.
When the Spirit dies, Pitiless Plunderer triggers, creating a Treasure token.
Resolve Back for Seconds, returning Tenacious Tomeseeker and Ministrant of Obligation from your graveyard to your hand, and then putting Ministrant of Obligation onto the battlefield.
Cast Tenacious Tomeseeker by paying ({2} magic symbol) ({U} magic symbol) , and choosing to pay its bargain cost by sacrificing a Spirit token.
When the Spirit dies, Pitiless Plunderer triggers, creating a Treasure token.
When Tenacious Tomeseeker enters the battlefield, it triggers, returning Back for Seconds from your graveyard to your hand.