Because your opponents cant cast spells during combat, their window to deal with Tahngarth is a little narrower
The first card of Mewtwo Strikes back cards is also a promo card not included in packs
Q: What are the odds of pulling certain cards
There are even some soft, circular lighting effects throughout the artwork

Nekusar, the Mindrazer Nekusar, the Mindrazer | Illustration by Mark Riddick Commander (1) Planeswalker (4) Ashiok, Dream Render Jace Beleren Ob Nixilis Reignited Ob Nixilis, the Hate-Twisted Creature (19) Bone Miser Scrawling Crawler Razorkin Needlehead Elder Brain Fate Unraveler Fell Specter Goblin Electromancer Kami of the Crescent Moon Kess, Dissident Mage Magus of the Jar Nightscape Familiar Niv-Mizzet, Parun Niv-Mizzet, the Firemind Obosh, the Preypiercer Sheoldred, the Apocalypse Stormfist Crusader Tergrid, God of Fright The Locust God Vito, Thorn of the Dusk Rose Instant (11) Aetherize Bedevil Brainstorm Counterspell Crosis's Charm Dark Ritual Negate Perplex Rakdos Charm Terminate Vision Skeins Sorcery (11) Collective Defiance Cruel Ultimatum Dark Deal Deadly Tempest Diminishing Returns Game Plan Khorvath's Fury Peer into the Abyss Prosperity Wheel of Misfortune Whispering Madness Enchantment (8) Curse of Obsession Megrim Phyrexian Tyranny Raiders' Wake Spiteful Visions Underworld Dreams Well of Ideas Wizard Class Artifact (9) Arcane Signet Decanter of Endless Water Folio of Fancies Geth's Grimoire Mind Stone Relic of Sauron Otherworld Atlas Sol Ring Teferi's Puzzle Box Land (37) Seething Landscape Bojuka Bog Command Tower Crumbling Necropolis Thundering Falls Geier Reach Sanitarium Island x7 Maestros Theater Mountain x6 Myriad Landscape Smoldering Marsh Sunken Hollow Swamp x12 Xander's Lounge Undercity Sewers One of my first 3-color decks ever was Nekusar, the Mindrazer

That's a game winning amount of damage, and you can send that damage at people's dorks and planeswalkers to kill very ably