Once per turn, it can destroy all the monsters your opponent controls by removing 3 counters from the field
The opportunities and the dangers are the same ones: thin markets, huge condition premiums, and lookalike versions worth a tenth of the real thing
For some people, cards are investments to store like casks of wine

Syr Armont, the Redeemer | Commander | Mark Wischkaemper Commander (1) 1 Syr Armont, the Redeemer Creatures (24) 1 Argothian Enchantress 1 Composer of Spring 1 Dawnhart Geist 1 Destiny Spinner 1 Elvish Archivist 1 Flutterfox 1 Generous Visitor 1 Hero of Iroas 1 Jukai Naturalist 1 Kor Spiritdancer 1 Leafcrown Dryad 1 Mesa Enchantress 1 Nessian Wanderer 1 Qasali Pridemage 1 Regal Bunnicorn 1 Satyr Enchanter 1 Slumbering Keepguard 1 Spellbook Vendor 1 Sram, Senior Edificer 1 Sythis, Harvest's Hand 1 Tanglespan Lookout 1 Timber Paladin 1 Transcendent Envoy 1 Unassuming Sage Sorceries (4) 1 Cultivate 1 Kodama's Reach 1 Return from the Wilds 1 Winds of Rath Enchantments (24) 1 Banishing Light 1 Cast Out 1 Celestial Mantle 1 Chains of Custody 1 Colossification 1 Eldrazi Conscription 1 Epic Proportions 1 Giant Inheritance 1 Grasp of Fate 1 In the Trenches 1 Indrik Umbra 1 Mammoth Umbra 1 Mantle of the Ancients 1 Mythic Proportions 1 Nature's Embrace 1 Oblivion Ring 1 Pollenbright Wings 1 Prodigious Growth 1 Quarantine Field 1 Seal from Existence 1 Shape of the Wiitigo 1 Spectra Ward 1 Verdant Embrace 1 Wurmweaver Coil The point, really, is to think about ramp holistically rather than just "run the most efficient ramp there is"

Also, since this card can attack twice, it can effectively deal 3200 battle damage
But these days destroying traps is pretty easy, so its quite a big risk