Mark of Sakiko attached to a creature with power five or greater that can attack this turn, and that cannot be blocked by an opponent.
Steps
Deal combat damage using the creature that has Mark of Sakiko attached.
The creature triggers, adding at least ({5} magic symbol) .
Move to your postcombat main phase.
Activate Aggravated Assault by paying ({5} magic symbol) , untapping all creatures you control and causing you to get an additional combat and main phase after this one.
Repeat.
If the creature with Mark of Sakiko attached has power six or greater, this combo will net infinite mana.