
Ob Nixilis, Unshackled | Legendary Creature | Demon | Flying, trample
Whenever an opponent searches their library, that player sacrifices a creature and loses 10 life.
Whenever another creature dies, put a +1/+1 counter on Ob Nixilis, Unshackled. | Karl Kopinski

Kalonian Twingrove | Creature | Treefolk Warrior | Kalonian Twingrove's power and toughness are each equal to the number of Forests you control.
When Kalonian Twingrove enters the battlefield, create a green Treefolk Warrior creature token with "This creature's power and toughness are each equal to the number of Forests you control." | Todd Lockwood

Phytotitan | Creature | Plant Elemental | When Phytotitan dies, return it to the battlefield tapped under its owner's control at the beginning of their next upkeep. | Marco Nelor

Obelisk of Urd | Artifact | | Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
As Obelisk of Urd enters the battlefield, choose a creature type.
Creatures you control of the chosen type get +2/+2. | John Severin Brassell

Scuttling Doom Engine | Artifact Creature | Construct | Scuttling Doom Engine can't be blocked by creatures with power 2 or less.
When Scuttling Doom Engine dies, it deals 6 damage to target opponent or planeswalker. | Filip Burburan