
Architect of the Untamed | Creature | Elf Artificer Druid | Landfall — Whenever a land enters the battlefield under your control, you get {E} (an energy counter).
Pay {E}{E}{E}{E}{E}{E}{E}{E}: Create a 6/6 colorless Beast artifact creature token. | Sara Winters

Bristling Hydra | Creature | Hydra | When Bristling Hydra enters the battlefield, you get {E}{E}{E} (three energy counters).
Pay {E}{E}{E}: Put a +1/+1 counter on Bristling Hydra. It gains hexproof until end of turn. | Chris Rahn

Cultivator of Blades | Creature | Elf Artificer | Fabricate 2 (When this creature enters the battlefield, put two +1/+1 counters on it or create two 1/1 colorless Servo artifact creature tokens.)
Whenever Cultivator of Blades attacks, you may have other attacking creatures get +X/+X until end of turn, where X is Cultivator of Blades's power. | Bastien L. Deharme

Dubious Challenge | Sorcery | | Look at the top ten cards of your library, exile up to two creature cards from among them, then shuffle. Target opponent may choose one of the exiled cards and put it onto the battlefield under their control. Put the rest onto the battlefield under your control. | Scott Murphy

Oviya Pashiri, Sage Lifecrafter | Legendary Creature | Human Artificer | {2}{G}, {T}: Create a 1/1 colorless Servo artifact creature token.
{4}{G}, {T}: Create an X/X colorless Construct artifact creature token, where X is the number of creatures you control. | Magali Villeneuve

Wildest Dreams | Sorcery | | Return X target cards from your graveyard to your hand. Exile Wildest Dreams. | Daniel Ljunggren

Blooming Marsh | Land | | Blooming Marsh enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {B} or {G}. | Adam Paquette
3 LSV

Botanical Sanctum | Land | | Botanical Sanctum enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {G} or {U}. | Christine Choi