At the beginning of your upkeep, put a spore counter on Spore Flower.
Remove three spore counters from Spore Flower: Prevent all combat damage that would be dealt this turn.

, : Target creature gains shroud until end of turn. Activate this ability only during your upkeep. (It can't be the target of spells or abilities.)

Svyelunite Temple enters the battlefield tapped.
: Add .
, Sacrifice Svyelunite Temple: Add .

At the beginning of your upkeep, put a spore counter on Thallid.
Remove three spore counters from Thallid: Create a 1/1 green Saproling creature token.

At the beginning of your upkeep, put a spore counter on Thallid Devourer.
Remove three spore counters from Thallid Devourer: Create a 1/1 green Saproling creature token.
Sacrifice a Saproling: Thallid Devourer gets +1/+2 until end of turn.

At the beginning of your upkeep, sacrifice Thelon's Chant unless you pay .
Whenever a player puts a Swamp onto the battlefield, Thelon's Chant deals 3 damage to that player unless the player puts a -1/-1 counter on a creature they control.

Blue creatures don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay for each creature chosen this way. If the player does, untap those creatures.

, , Sacrifice a creature: Forests you control become 2/3 creatures until end of turn. They're still lands.

, Sacrifice a green creature: Target land becomes a Forest. (This effect lasts indefinitely.)

At the beginning of your upkeep, put a spore counter on Thorn Thallid.
Remove three spore counters from Thorn Thallid: It deals 1 damage to any target.

Thrull creatures get +1/+1.
: Gain control of target Thrull for as long as you control Thrull Champion.

Enchant creature
Enchanted creature gets +1/+1.
Sacrifice Thrull Retainer: Regenerate enchanted creature.

: Counter target black spell unless that spell's controller pays or .

: For each attacking creature without flying, its controller may pay . If that player doesn't, creatures you control blocking that creature gain first strike until end of turn.

Cast this spell only if no permanents named Tidal Influence are on the battlefield.
Tidal Influence enters the battlefield with a tide counter on it.
At the beginning of your upkeep, put a tide counter on Tidal Influence.
As long as there is exactly one tide counter on Tidal Influence, all blue creatures get -2/-0.
As long as there are exactly three tide counters on Tidal Influence, all blue creatures get +2/+0.
Whenever there are four or more tide counters on Tidal Influence, remove all tide counters from it.

At the beginning of your upkeep, sacrifice Tourach's Chant unless you pay .
Whenever a player puts a Forest onto the battlefield, Tourach's Chant deals 3 damage to that player unless they put a -1/-1 counter on a creature they control.

Enchant land you control
Sacrifice a Thrull: Put three time counters on Tourach's Gate.
At the beginning of your upkeep, remove a time counter from Tourach's Gate. If there are no time counters on Tourach's Gate, sacrifice it.
Tap enchanted land: Attacking creatures you control get +2/-1 until end of turn. Activate this ability only if enchanted land is untapped.

First strike
Vodalian Knights can't attack unless defending player controls an Island.
When you control no Islands, sacrifice Vodalian Knights.
: Vodalian Knights gains flying until end of turn.

, : Counter target spell unless its controller pays .