To touch up on the cycles mentioned in this thread, for the DTK Commands they're all really good and I would not underestimate
Dromoka's Command. I've used just about every mode over the course of a game and I actually think it is the second best behind
Kolaghan's Command. I don't own a copy of
Atarka's Command at the moment, but even then, I'm not sure if I really want to use up a Gruul slot for it, no matter how powerful it is. I've found that my aggressive GR decks haven't really needed any extra help over the months.
For the God weapon cycle, I'm still running the Bow and the Whip, cut Hammer and Spear a long while back. Bow is amazing, it's way sweeter than you'd think however inelegant it might be. I'm just not that interested in anthems to be honest, though I may come back to it eventually if I want to add another token card or two in the future. Bident was too slow at the 4 drop and never really had much of a payoff, and Hammer never really came together since so many of the red finishers are either hasty or have some cool ETB already to generate their value.
From the former Khans cycle from DTK I've got Anafenza, Zurgo and Sidisi still in my cube. Zurgo is an All-Star doing exactly what you'd expect from an aggro one drop, Anafenza has been a kill on site target most of the time because it can get out of hand, and Sidisi is a boring but solid option at 5. Sidisi is the kind of power level I'm comfortable with for a big black finisher that isn't
Grave Titan, though I probably want something a wee bit stronger to close out games. 4 power isn't a real clock, the card you should be tutoring for is obviously the bigger payoff here. Cut Surrak a while back because while strong, he was the most boring 4-drop I had and replaced him with Woodland Wanderer. Finally, I have a copy of Narset but I haven't tried her out. This is mostly due to my planeswalker cutting kick that I was on and because I don't really have UW slots to spare. May check it out sometime.
FRF Mythic cycle; I run all but Torrent Elemental and Shaman of the Great Hunt. The other three have been stellar, especially Brutal Hordechief who is the nuts when you curve out in a BW aggro deck. So much reach. Torrent Elemental is kinda trash and Shaman isn't as cool to me as
Hero of Oxid Ridge so he never found his way into my Cube.
I don't like running the majority of morph cards, but I made an exception for
Den Protector. That card is just so sweet and my drafter have gladly done the Morph + Flip on a single turn play multiple times to regrow a sweet card. I don't think it's leaving the Cube ever,
Regrowth effects are just so great and you feel awesome when you rebuy value.
Finally, for the Sieges, Outpost Siege is the only one I run and it's sweet. Both modes can be relevant at different times, but as someone mentioned earlier, it's the red Phyrexian Arena. Excellent card, will not cut for a long while.
Citadel Siege is just bullshit, be careful with it. I lost to it at FRF prerelease because I couldn't kill a stupid
Mardu Woe-Reaper who ended up outpacing my removal each turn, became a mini-Abyss, and I eventually got beaten to death by an 8/7 one drop. Then I tried it one draft for Cube with a BW deck and proceeded to beat someone to death with a
Champion of the Parish who didn't even need any buddies. It's just a powerful card and stupid uninteractive with the counters mode. Hard as hell or impossible to get rid of for certain decks.
