Convergence of Dominion
Artifact
Dynastic Command Node — As long as you control your commander, activated abilities of cards in your graveyard cost 
less to activate. This effect can't reduce the mana in that ability's activation cost to less than one mana.
Translocation Protocols — , 
: Mill three cards.
David Álvarez
Rulings
Convergence of Dominion doesn't allow you to activate abilities of cards in graveyards unless you could already activate those abilities.
(wotc • 2022-10-07)
Rulings
Convergence of Dominion doesn't allow you to activate abilities of cards in graveyards unless you could already activate those abilities.
(wotc • 2022-10-07)