The card has to also be desirable outside its artificial scarcity

Advanced Search Sets Random Syntax Aang, Air Nomad Aang, Destined Savior Ajani, the Greathearted Akroma's Memorial Alacrian Armory Always Watching Angelic Field Marshal Brave the Sands Brigid, Who's Seen Some Stuff (playtest) Captain of the Watch Circle of Elders Defender of the Queue (playtest) Doctor Strange, Surgeon Earthbending Student Embodiment of Insight Enduring Vitality Esika, God of the Tree Finneas, Ace Archer Frondland Felidar Gate Hound Gavony Gnarled Grovestrider Hallowed Haunting Heliod, God of the Sun Herald of Dromoka Hold the Gates Inga and Esika Inquisitor Greyfax Jetmir, Nexus of Revels Joraga Bard Kamahl, Heart of Krosa Katara, Water Tribe's Hope Maze Sentinel Oathsworn Giant Oko, Shadowmoor Scion Pheres-Band Warchief Radiant Destiny Raksha Golden Cub Red XIII, Proud Warrior Riders of Gavony Samut, Voice of Dissent Samut, the Driving Force Selenia Sensor Splicer Sentinel Sliver Serra's Blessing Serra's Guardian Silverwing Squadron Spectral Gateguards Star Whale Templar Knight Tenth District Hero The Destined Warrior Thraben Watcher Tocasia, Dig Site Mentor Vihaan, Goldwaker Village Survivors Vivien Reid

Again, Im excited for my first foray into a major trading card game
It wont go into every deck with green and white in it, but itll be a strong player in the ones it does
Broaden Your Horizons Modern Horizons returns with a treasure trove of tools for Modern and Commander players to build, tinker, and perfect the decks of their wildest dreams
They arent really modifications, unless they give your creature a +1/+1 counter, but combat tricks felt more natural to include here