It's activated ability is a great land-animation effect that gives you those extra attackers you need to finish off an opponent

Chainer Reanimator Chainer, Nightmare Adept | Illustration by Steve Prescott Commander (1) Planeswalkers (2) Liliana, Waker of the Dead Ob Nixilis, the Hate-Twisted Creatures (23) Archfiend of Despair Coffin Queen Crypt Ghast Desecration Demon Dockside Extortionist Dragon Mage Fate Unraveler Fleshbag Marauder Goldspan Dragon Humble Defector Immersturm Predator Kederekt Parasite Kokusho, the Evening Star Maddening Imp Magus of the Wheel Massacre Wurm Rakdos, Lord of Riots Sangromancer Sheoldred, Whispering One Stormfist Crusader Tergrid, God of Fright The Haunt of Hightower Varragoth, Bloodsky Sire Instants (7) Bedevil Rakdos Charm Slaughter Pact Soul Shatter Sudden Spoiling Terminate Tragic Slip Sorceries (15) Damnation Dark Deal Demonic Tutor Dredge the Mire Grim Tutor Incendiary Command Molten Psyche Reforge the Soul Rise of the Dark Realms Scheming Symmetry Torment of Hailfire Toxic Deluge Wheel of Fate Wheel of Misfortune Winds of Change Enchantments (6) Liliana's Caress Megrim Sneak Attack Underworld Breach Underworld Dreams Waste Not Artifacts (11) Arcane Signet Commander's Sphere Fellwar Stone Geth's Grimoire Howling Mine Mana Crypt Memory Jar Mind Stone Sol Ring Talisman of Indulgence Thought Vessel Lands (35) Blightstep Pathway Blood Crypt Bloodstained Mire Bojuka Bog Cabal Coffers Command Tower Dragonskull Summit Exotic Orchard Fabled Passage Graven Cairns Luxury Suite Molten Slagheap Mountain x8 Rocky Tar Pit Smoldering Marsh Sulfurous Springs Swamp x11 Urborg, Tomb of Yawgmoth Yes, Dockside Extortionist is banned in Commander, but I'm trying to retain the decks as they were at the time of writing (you can make updates if you wish)

Glint-Horn Buccaneer This minotaur pirate is an interesting one, caring specifically about discarding cards
But in a compromise scenario, I believe each of the legendary creatures or planeswalkersmaybe not Spike, Tournament Grindershould be legal as Commanders, but that I am not personally in favor of making all silver-bordered cards legal because it would create too long of banned list to remove the unfun cards
1 Ral, Storm Conduit
You sacrifice Lunar Force even if the spells already been countered, perhaps by the ability of another Lunar Force, or if the spell cant be countered