Quantum Riddler is a space Sphinx that can draw you cards, and potentially draw you a lot of cards if you're playing them quickly
Top-bottom is roughly 52/48

Here's the set used by Masters Division Champion Tord Reklev: Charmander (026/197) - 4 cards Charmeleon (008/091) - 1 card Charizard ex (125/197)- 3 cards Pidgey (016/165) - 2 cards Pidgeot ex (164/197) - 2 cards Radiant Charizard (020/159) - 1 card Bidoof (111/159) - 1 card Bibarel (121/172) - 1 card Rotom V (045/159) - 1 card Lumineon V (040/172) - 1 card Cleffa (080/197) - 1 card Manaphy (041/172) - 1 card Jirachi (126/182) - 1 card Arven (186/197) - 3 cards Iono (185/193) - 3 cards Boss's Orders (172/193) - 2 cards Professor Turo's Scenario (171/182) - 2 cards Roxanne (150/189) - 1 card Team Yell's Cheer (149/172) - 1 card Rare Candy (191/198) - 4 cards Ultra Ball (196/198) - 4 cards Buddy-Buddy Poffin (144/162) - 4 cards Super Rod (188/193) - 2 cards Nest Ball (181/198) - 1 card Counter Catcher (160/182) - 1 card Prime Catcher (157/162) - 1 card Lost Vacuum (162/196) - 1 card Forest Seal Stone (156/195) - 1 card Choice Belt (176/193) - 1 card Defiance Band (169/198) - 1 card Collapsed Stadium (137/172) - 1 card The star of this deck is, of course, Charizard ex from the Obsidian Flames expansion

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Top 20 list of the most common Magic: the Gathering Tokens: #1 2/2 Black Zombie Creature Token has been printed 51 times Zombie Creature Zombie 2 / 2 Set: Theros Beyond Death Illustrated by: Emrah Elmasli Sources: Archdemon of Unx, Army of the Damned, Aphemia, the Cacophony, Awaken the Erstwhile, Boneclad Necromancer, Bone Miser, Bridge From Below, Captive Audience, Cellar Door, Cemetery Reaper
Supply and demand do the rest