Unlike Duskmourn's other Commander decks, Endless Punishment comes with seven other potential commanders, but none of them have the sort of synergy with the rest of the deck as Valgavoth
You have a titular Hero character, a number of equipment cards for that hero, and then a deck full of actions that usually represent attacks by that hero
This means that Alchemy: Tarkir should release on April 29th if this trend continues
Early game in a spellslinger deck this is a serviceable rock, but as the game progresses, you can essentially pay five to cast some spells again, at random, over the next few turns
Causing players to turn one of their non-island lands into an island each turn in the form of flood counters, Quicksilver Fountain enables your merfolk with islandwalk across the entire board while also slowly interfering with the mana of any of your opponents who aren't playing blue
Being a 3 mana sorcery speed effect with no board presence at all it is hard to deploy as things are getting pretty serious around then and lots needs doing so that the game doesn't get out of hand