If an opponent attacks you with two or more creatures more than once in a turn (probably because they've generated extra combat phases), Trouble in Pairs's last ability will trigger each time that happens
Growing your armys size also works well with The Meathook Massacre, and Tenacious Underdog is the rare creature that you often dont mind losing to your own board wipe
Commander Devotion is certainly viable in EDH, either as a payoff/choice for your commander (with one of the many available gods helming your deck) or as individual card choices
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If you Mise, he likes to say, It's an Ancestral Recall. For those of you out there that are wondering why this is in an Un set rather than normal Magic , the answer lies in its swinginess
1x Knowledge Exploitation 1x Mass Mutiny 1x Molten Psyche 1x Order of Succession 1x Pain's Reward 1x Primal Surge 1x Scrambleverse 1x Shahrazad 1x Stronghold Gambit 1x Thieves' Auction 1x Time Reversal 1x Time Spiral 1x Warp World 1x Wheel of Fate 1x Wheel of Fortune 1x Whims of the Fates Artifact (12) Commander (1) Creature (21) 1x Barbed Shocker 1x Braids, Conjurer Adept 1x Capricious Efreet 1x Conundrum Sphinx 1x Defiler of Souls 1x Dragon Mage 1x Etherium-Horn Sorcerer 1x Fatespinner 1x Heartless Hidetsugu 1x Heartwood Storyteller 1x Ink-Treader Nephilim 1x Jace's Archivist 1x Karona, False God 1x Lord of the Void 1x Magus of the Moon 1x Meletis Charlatan 1x Molten Primordial 1x Perplexing Chimera 1x Precursor Golem 1x Shocker 1x Sphinx Ambassador