AI DraftFeb 26, 2026
Metalworker + Staff of Domination
Overview
Metalworker’s tap ability is a mana ability (Ruling [2004-10-04]) that produces 
for each artifact revealed; Staff of Domination has activated tap abilities that can untap Metalworker and can be untapped itself for 
. With Metalworker revealing at least three artifacts you can loop: tap Metalworker for mana, spend 
,
on Staff to untap Metalworker, pay to untap the Staff, and repeat to generate net positive mana (and then use Staff’s other 
, abilities), because Metalworker is an artifact creature and can be targeted by Staff’s untap ability .
for each artifact revealed; Staff of Domination has activated tap abilities that can untap Metalworker and can be untapped itself for . With Metalworker revealing at least three artifacts you can loop: tap Metalworker for mana, spend , on Staff to untap Metalworker, pay to untap the Staff, and repeat to generate net positive mana (and then use Staff’s other , abilities), because Metalworker is an artifact creature and can be targeted by Staff’s untap ability .Step 1
Start with Metalworker and Staff of Domination under your control, and have N artifact cards in hand you will reveal to Metalworker; remember Metalworker is an artifact creature and can be targeted by Staff .
Step 2
Activate Metalworker’s ability and reveal N artifacts to add 2N colorless mana to your mana pool; Metalworker’s ability is a mana ability and does not go on the stack (Ruling [2004-10-04]).
ability and reveal N artifacts to add 2N colorless mana to your mana pool; Metalworker’s ability is a mana ability and does not go on the stack (Ruling [2004-10-04]).Step 3
Spend and tap the Staff (,) to activate “Untap target creature,” targeting Metalworker; Metalworker becomes untapped and the Staff becomes tapped.
and tap the Staff (,) to activate “Untap target creature,” targeting Metalworker; Metalworker becomes untapped and the Staff becomes tapped.Step 4
Spend to activate the Staff’s : Untap this artifact ability to untap the Staff (this ability doesn’t require tapping the Staff to activate).
to activate the Staff’s : Untap this artifact ability to untap the Staff (this ability doesn’t require tapping the Staff to activate).Step 5
You are back to Staff untapped and Metalworker untapped with net mana change = +2N - 4 in this cycle; if 2N - 4 > 0 (i.e., N ≥ 3) you gain mana per cycle and can repeat to make arbitrarily large amounts of mana, then use Staff’s other , abilities (for example 
, to draw) as desired.
, abilities (for example , to draw) as desired.Resolution
If you control Metalworker and Staff of Domination and reveal N artifacts with Metalworker, each full loop of (tap Metalworker for 2N colorless; pay , on Staff to untap Metalworker; pay to untap Staff) has net mana change 2N - 4; therefore revealing 3 or more artifacts (N ≥ 3) gives a positive net and allows an infinite loop producing infinite mana, and thus infinite uses of Staff’s other tap abilities (e.g. , to draw a card), with Metalworker being a legal target because it’s an artifact creature and Metalworker’s ability is a mana ability (Ruling [2004-10-04]).
, on Staff to untap Metalworker; pay to untap Staff) has net mana change 2N - 4; therefore revealing 3 or more artifacts (N ≥ 3) gives a positive net and allows an infinite loop producing infinite mana, and thus infinite uses of Staff’s other tap abilities (e.g. , to draw a card), with Metalworker being a legal target because it’s an artifact creature and Metalworker’s ability is a mana ability (Ruling [2004-10-04]).Feedback