Play a land.
When the land enters, Homer triggers, causing you and any number of opponents to each mill a number of cards.
If you milled a land this way, Hedge Shredder triggers, putting the land(s) onto the battlefield tapped.
When the land(s) enter, Homer triggers that many times.
Resolve the first Homer trigger, causing you and any number of opponents to each mill a number of cards.
Repeat from step 3.

Near-infinite landfall triggers

Near-infinite mill

Near-infinite self-mill

Put most lands from your library onto the battlefield tapped

Homer, the Hermit

Hedge Shredder

Play a land.
When the land enters, Rydia triggers, causing you to discard Golgari Grave-Troll, and then mill six cards and return Golgari Grave-Troll from your graveyard to your hand due to its dredge ability.
If you milled one or more lands this way, Hedge Shredder triggers, putting them from your graveyard onto the battlefield tapped.
When the land(s) enter, Rydia triggers that many times.
Resolve the first trigger, causing you to discard Golgari Grave-Troll, and then mill six cards and return Golgari Grave-Troll from your graveyard to your hand due to its dredge ability.
Repeat from step 3 as able.

Put most land cards from your library onto the battlefield tapped

Rydia, Summoner of Mist

Golgari Grave-Troll

Cast Scouting Trek by paying {1}{G}, searching your library for all basic land cards and putting them onto the top of your library.
Play a land.
When the land enters, Icetill Explorer triggers, causing you to mill a card.
As the milled card will be a land, Hedge Shredder's second ability triggers, putting the land from your graveyard onto the battlefield tapped.
Repeat step 3 until you do not mill a land.

Put all basic lands from your library onto the battlefield tapped

Scouting Trek

Icetill Explorer

Activate Altar of Dementia by sacrificing Dryad Arbor.
When Dryad Arbor dies, Mortuary triggers, putting Dryad Arbor from your graveyard onto the top of your library.
Resolve the Altar of Dementia ability, causing you to mill Dryad Arbor.
Hedge Shredder's second ability triggers, returning Dryad Arbor from your graveyard to the battlefield tapped.
Repeat.

Combos with "Hedge Shredder"