Primus

Haste

Whenever one or more creatures you control attack, add that much mana in any combination
of {r} and/or {g}. Until end of turn, you don't lose this mana as steps and phases end.
———{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}
"We will rise, and claim the engines of labour that have bound us in servitude!"