The Master, Formed Anew | Ruthless Technomancer | Dack's Duplicate

(and one other card)

Cast
The Master by paying ({U} magic symbol) ({B} magic symbol) .
When
The Master enters the battlefield, it triggers, causing you to sacrifice
Dack's Duplicate and create at least two Treasure tokens.
Activate a Treasure by tapping and sacrificing it, adding ({B} magic symbol) .
Activate
The Master by paying ({B} magic symbol) and sacrificing a Treasure, returning
Dack's Duplicate from your graveyard to the battlefield as a copy of
The Master, which causes the
Dack's Duplicate to be a copy of
Ruthless Technomancer.
When
Dack's Duplicate enters the battlefield, it triggers, causing you to sacrifice
The Master and create two Treasure tokens.
Activate a Treasure by tapping and sacrificing it, adding ({B} magic symbol) .
Activate
Dack's Duplicate by paying ({B} magic symbol) and sacrificing a Treasure, returning
The Master from your graveyard to the battlefield as a copy of
Ruthless Technomancer.
Repeat from step 2.