The Master, Formed Anew | Ruthless Technomancer | Spark Double

(and one other card)

Ruthless Technomancer in exile (with a takeover counter on it).
The Master in hand or in the command zone.
Spark Double and
Training Grounds on the battlefield.
Spark Double has a power of at least 2.
({U} magic symbol) ({B} magic symbol) plus enough mana to pay for commander tax, if applicable available.

Cast
The Master either from your hand or from the command zone by paying ({U} magic symbol) ({B} magic symbol) plus command tax, if applicable, choosing to have it enter the battlefield as a copy of
Ruthless Technomancer.
When
The Master enters the battlefield, it triggers, causing you to sacrifice
Spark Double 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
Spark Double from your graveyard to the battlefield as a copy of
The Master, which causes the
Spark Double to be a copy of
Ruthless Technomancer.
When
Spark Double 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
Spark Double 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.