Lotus Field | Echoing Deeps | Aftermath Analyst (and two other cards)

Cards

There are two mana-producing land cards in your graveyard.
There are three or more card types among cards in your graveyard excluding the "Creature" type.

Play
Lotus Field. When it enters untapped due to
Horizon Explorer, it triggers.
Holding priority, activate
Lotus Field by tapping it, adding ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Resolve the
Lotus Field trigger, sacrificing it and
Echoing Deeps.
Activate
Aftermath Analyst by paying ({3} magic symbol) ({G} magic symbol) and sacrificing it, returning all land cards from your graveyard to the battlefield untapped due to
Horizon Explorer. Choose to have
Echoing Deeps enter as a copy of
Lotus Field.
When
Echoing Deeps and
Lotus Field enter, they each trigger.
Holding priority, activate
Echoing Deeps,
Lotus Field and two other mana-producing lands except
Shifting Woodland by tapping them, adding at least ({5} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Resolve the
Echoing Deeps and
Lotus Field triggers, sacrificing them and the lands tapped for mana in step 6.
Activate
Shifting Woodland's first ability by tapping it, adding ({G} magic symbol) .
Activate
Shifting Woodland's second ability by paying ({2} magic symbol) ({G} magic symbol) ({G} magic symbol) , causing it to become a copy of
Aftermath Analyst.
Activate
Shifting Woodland by paying ({3} magic symbol) ({G} magic symbol) and sacrificing it, returning all land cards from your graveyard to the battlefield untapped due to
Horizon Explorer. Choose to have
Echoing Deeps enter as a copy of
Lotus Field.
Repeat from step 5.

This combo has been estimated to be Exhibition (Bracket 1+).