Keyword: Fading

Fading 7 (This enchantment enters the battlefield with seven fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
Remove a fade counter from Saproling Burst: Create a green Saproling creature token. It has “This creature’s power and toughness are each equal to the number of fade counters on Saproling Burst.”
When Saproling Burst leaves the battlefield, destroy all tokens created with Saproling Burst. They can’t be regenerated.

Fading 4 (This creature enters the battlefield with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
Remove a fade counter from Jolting Merfolk: Tap target creature.

Enchant creature
Fading 1 (This enchantment enters the battlefield with one fade counter on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
Enchanted creature gets +3/+2.
When Parallax Dementia leaves the battlefield, destroy enchanted creature. That creature can’t be regenerated.

Fading 2 (This creature enters the battlefield with two fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
Skyshroud Behemoth enters the battlefield tapped.

Fading 2 (This creature enters the battlefield with two fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)

Fading 3 (This creature enters the battlefield with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
Remove a fade counter from Phyrexian Prowler: Phyrexian Prowler gets +1/+1 until end of turn.

Shroud (This creature can’t be the target of spells or abilities.)
Fading 3 (This creature enters the battlefield with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)

Fading 5 (This enchantment enters the battlefield with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
Remove a fade counter from Parallax Tide: Exile target land.
When Parallax Tide leaves the battlefield, each player returns to the battlefield all cards they own exiled with Parallax Tide.

Fading 4 (This artifact enters the battlefield with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
At the beginning of each player’s upkeep, that player taps an untapped artifact, creature, or land they control for each fade counter on Tangle Wire.

Fading 3 (This creature enters the battlefield with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
, Remove a fade counter from Woodripper: Destroy target artifact.

Fading 4 (This creature enters the battlefield with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
Remove a fade counter from Defender en-Vec: Prevent the next 2 damage that would be dealt to any target this turn.

Flying
Fading 3 (This creature enters the battlefield with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)

Fading 2 (This artifact enters the battlefield with two fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can’t, sacrifice it.)
: You gain 2 life.