Modern is the MTG format chosen for the Secret Lair Showdown
D-Tier Not Even Worth Discussing Cards: Arcum's Astrolabe, Chrome Mox, Dark Depths, Dig Through Time, Eye of Ugin, Field of the Dead, Gitaxian Probe, Hogaak, Arisen Necropolis, Mox Opal, Mystic Sanctuary, Oko, Thief of Crowns, Once Upon a Time, Seething Song, Skullclamp, Summer Bloom, Rite of Flame, Krark-Clan Ironworks, Golgari Grave-Troll, Tibalt's Trickery, Treasure Cruise, and Uro, Titan of Nature's Wrath
Not strong enough to see competitive play, but pretty popular in casual Commander decks
Tons of cheap back issues to look through
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I've never seen him run as a commander and wouldn't understand why you weren't just running Ghave or Anafenza instead