
Genesis Hydra | Creature | Plant Hydra | When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library.
Genesis Hydra enters the battlefield with X +1/+1 counters on it. | Peter Mohrbacher

Hornet Nest | Creature | Insect | Defender (This creature can't attack.)
Whenever Hornet Nest is dealt damage, create that many 1/1 green Insect creature tokens with flying and deathtouch. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.) | Adam Paquette

Hornet Queen | Creature | Insect | Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Hornet Queen enters the battlefield, create four 1/1 green Insect creature tokens with flying and deathtouch. | Martina Pilcerova

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

Yisan, the Wanderer Bard | Legendary Creature | Human Rogue Bard | {2}{G}, {T}, Put a verse counter on Yisan, the Wanderer Bard: Search your library for a creature card with mana value equal to the number of verse counters on Yisan, put it onto the battlefield, then shuffle. | Chase Stone