They trigger various high-power creature abilities at low cost, like a Witchs Oven bonus, and just generally break the baked-in limits on a lot of other text boxes
Stessan Training Setessan Training isn't going to turn heads but it's exactly the type of card you want for certain Green Aura brews: it's pretty cheap, cantrips, and makes your creature a bit better
Some mechanics just ask you to reveal cards, but to do these cards still need rectangles in your hand, and the more the better for Osseous Exhale, Orator of Ojutai, or Martyr of Sands

Lorcana Digimon Card Game Dragon Ball Super Flesh and Blood And all standard-size TCGs (6388 mm) WHATS INCLUDED IN THE DOWNLOAD STL File - [CardFrame Deck Box 100] STL File - [Nature Frame] FEATURES AT A GLANCE Holds 100 double-sleeved cards Interchangeable design panels for customization Built-in display window fits Ultra Pro One Touch 35pt Mechanical deck lift for easy card access Extra compartment in the lid for dice, markers, and tokens COLLECTIONS CardFrame Series Design Frames [ Deck Box 60 [ Deck Box 100 [ Card Stand 35 [ Wall Mount 35 [available soon!] Bestsellers [ New Releases [ YOUTUBE: BUILD & SHOWCASE VIDEO YouTube video for 3d printing & assembling the deck box [ Video explaining the entire CardFrame Series [ COMMUNITY & SOCIAL MEDIA Join our community and stay updated on new releases: www.dream-new-art.com RECOMMENDED MATERIAL For FDM 3D printing, the following materials can generally be used: ABS, ASA, PC, PETG, PLA, TPU, HIPS, Nylon, and others

Its rarity and status as a big, splashy dragon make it a collector favorite