Ultimate Green Goblin Without this card, a lot of Mayhem cards from Marvels Spider-Man (I hope they print more in other sets) would be pretty bad
The full list of Conspiracy cards banned in Commander is: Adriana's Valor Advantageous Proclamation Assemble the Rank and Vile Backup Plan Brago's Favor Double Stroke Echoing Boon Emissary's Ploy Hired Heist Hold the Perimeter Hymn of the Wilds Immediate Action Incendiary Dissent Iterative Analysis Muzzio's Preparations Natural Unity Power Play Secret Summoning Secrets of Paradise Sentinel Dispatch Sovereign's Realm Summoner's Bond Unexpected Potential Weight Advantage Worldknit Ante cards Nine cards that reference 'playing for ante' are banned in Commander and all other formats
Cycling can be a useful ability, too, as it gives you spells that can be binned early on or cast for their full value later in the game
Dion, Bahamut's Dominant [Borderless Surge Foil] #521 (Magic Final Fantasy | Magic Cards) prices are based on the historic sales
Having an Abrupt Decay in hand or in deck with more removal, it might be better to proactively take that pesky planeswalker, or counterspell, or Path to Exile, or any non creature card
Five mana is quite a lot for the effect, but being a colorless card is a huge boon here, and its not as expensive as it could be