Activate Grinding Station by tapping it and sacrificing Sword of the Meek.
Summoning Station triggers, untapping itself.
Resolve the Grinding Station ability, causing target player to mill three cards.
Activate Summoning Station by tapping it, creating a 2/2 Pincher creature token.
The Pincher enters the battlefield as a 1/1 creature due to Humility, triggering Sword of the Meek, returning Sword of the Meek from your graveyard to the battlefield attached to the Pincher.
Sword of the Meek enters the battlefield, triggering Grinding Station, untapping Grinding Station.
Repeat.
This clever loop transforms graveyard-bound equipment into an endless manufacturing plant, fueled entirely by the static oppression of Humility. Because Humility reduces every creature to a base 1/1, the Pincher token created by Summoning Station instantly satisfies the trigger condition for Sword of the Meek to resurrect itself from the graveyard. As the Sword re-enters the battlefield, it untaps Grinding Station, which in turn offers up the Sword as a sacrifice to mill your opponent—which also untaps Summoning Station to start the cycle anew.