All five rings in this M13 cycle are fairly decent, but the defensive ability makes Xathrid stand out
The best Pokmon cards are the ones with strong attacks, powerful abilities, and high defenses

Gabriel Angelfire Rampage 3 Gabriel Angelfire | Illustration by Daniel Gelon Commander (1) Planeswalker (1) Creature (24) Heliod's Pilgrim Danitha Capashen, Paragon Noble Quarry Elven Warhounds Odric, Master Tactician Engulfing Slagwurm Restoration Specialist Arbor Elf Siona, Captain of the Pyleas Satyr Enchanter Taunting Arbormage Kor Spiritdancer Shinen of Life's Roar Jangling Automaton Eidolon of Blossoms Stonehewer Giant Sylvan Basilisk Sram, Senior Edificer Mentor of the Meek Mesa Enchantress Setessan Champion Magus of the Candelabra Voyaging Satyr Tempting Licid Instant (7) Heliod's Intervention Beast Within Dawn Charm Selesnya Charm Mercy Killing Seedling Charm Benefactor's Draught Enchantment (15) Lure Weirding Wood Seton's Desire Indrik Umbra Nature's Blessing Wild Growth Dragon Fangs Reprobation Fertile Ground Shielded by Faith Wolfwillow Haven Overgrowth Unflinching Courage Kenrith's Transformation Karametra's Favor Sorcery (9) Harmonize Winds of Rath Cultivate Roar of Challenge Idyllic Tutor Revenge of the Hunted Sylvan Offering Open the Armory Three Dreams Artifact (7) Horned Helm Helm of Chatzuk Sol Ring Nemesis Mask Mirror Shield Conqueror's Galleon Infiltration Lens Land (36) Selesnya Guildgate Selesnya Sanctuary Command Tower Graypelt Refuge Sungrass Prairie Forest x13 Terramorphic Expanse Evolving Wilds Krosan Verge Plains x13 Blossoming Sands Reliquary Tower This Gabriel Angelfire deck may be the perfect balance between funny and good

Maybe you dont like flashback as a mechanic since you can only use the spells once
This text was basically reprinted in Night Maintenance from MT except better as it was changed to saying just Pokmon. Supporters like Flower Shop Lady from UD easily bests it, however you are reduced to only one per turn
Magic has a large secondary market, and some cards have held or gained significant value over time