Zoroark GXs Trade ability allows you to discard one card from your hand and draw two more (once a turn before you attack)
Consumers literally have no choice but to buy it if they want to finish their collection. Of course, many simply cant do that
They didnt really tie into that sets themes, but theyre the perfect fit for this one

Calculated Dismissal Cascade Seer Catch of the Day (playtest) Cavalier of Gales Chain to Memory Chorus of the Tides Cloudreader Sphinx Condescend Contact Other Plane Council's Deliberation Cryptic Annelid Curator of Mysteries Deliberate Delightful Discovery Denethor, Stone Seer Desynchronize Dissolve Diviner's Portent Djinn of the Fountain Djinni Windseer Eligeth, Crossroads Augur Elrond, Lord of Rivendell Elvish Mariner Eye of Malcator Eyes Everywhere Eyes of the Watcher Fading Hope Faerie Seer Fated Infatuation Foresee Freeze in Place Gadwick's First Duel Geist of the Archives Glimmer of Genius Glistener Seer Goggles of Night Graven Lore Grey Havens Navigator Hakka, Whispering Raven Hedron Alignment Hermes, Overseer of Elpis Hithlain Knots Horizon Scholar Horses of the Bruinen Impede Momentum Inga Rune-Eyes Ingenious Mastery Inscription of Insight Interpret the Signs Jace's Defeat Jace's Sanctum Jace, Mirror Mage Jace, Unraveler of Secrets Joint Exploration

This gives players control over how much they want to spend, but the game can feel expensive if you chase every release
Creature - Bat Color tag templates(None) Drana, Liberator of Malakir Flying, first strike Whenever Drana deals combat damage to a player, put a +1/+1 counter on each attacking creature you control