Strong/Staples:

None.

Interest:

Frontline Rush (U): Great token card that works both on curve and as a finisher. It’s not Heroic Reinforcements, but I like it more than Midnight Mayhem.

Purging Stormbrood (U): The dragon half is a pretty strong creature, so much so that I think this is playale as a 5-mana mono-Black card; I like it more than Sengir Vampire. The White trick is slightly over-priced, but it’s still effective, though I think I’d still think of this mostly as a Black card.

Twinmaw Stormbrood (U): The omen is playable on its own and this actually incentivizes a controlling Boros deck. Very cool.

Similar:

None.

Unique/Synergy:

Auroral Procession (U): The rate is good (and instant speed is very nice), but I think the effect is a little too generic for a multicolor card that would make my drafters excited to move into the color pair (a reward, not a reason).

Karakyk Guardian (U): A decent payoff for ramping that’s incredibly likely to get in at least one hit, but I still dislike the 3-color cost. Funny that this uncommon is almost identical to Palladia-Mors, the Ruiner.

Kishla Skimmer (U): Seems like strong support the leaves the graveyard theme, but I still don’t think we have the density of support for it. With that said, this plus Insidious Roots would let you queue drafters that this is a deck.

Rakshasa's Bargain (U): At 4+-mana, this is below Fact or Fiction or [Scattered Thoughts]]. So it only makes sense if you’re explicitly supporting 3-color cards and, even then, it’s just a generic card draw spell. It is playable at 4-mana though in Black-Green, which is interesting.

Sonic Shrieker (U): One of the few cards where the intensive mana corresponds to sufficient value, but again, it’s just generically strong, so I don’t think I’ll contort my cube to have 3-color cards just for a strong beater.

Stalwart Successor (U): We now have a number of Winding Constrictor type effects, so we may have density. But the problem is and always has been that Black doesn’t support +1/+1 counters well.

No Interest:

Armament Dragon (U): I am very skeptical of 3-color cards and while this provides an immediate impact, it doesn’t have any protection. Compares unfavorably to Atraxi Warden.

Bone-Cairn Butcher (U): Without a focus on tokens, this is just a hard to cast card that is slightly above stats. And even then, Iraxxa, Empress of Mars provides almost the same/more.

Cori Mountain Stalwart (U): If you could reliably trigger this twice, it’d be great, but it’s weak as a top deck and the body isn’t exciting.

Defibrillating Current (U): Sorcery speed removal with minor upside; arguably worse than mono-color Ghostfire Slice.

Disruptive Stormbrood (U): Both sides are useful and have value, but I worry this is primarily a Black card and if you’re playing it for both sides, it’s taking up a slot in a guild that has more synergistic and interesting options.

Dragonclaw Strike (U): Hard-to-cast/expensive sorcery speed fight for 3-mana is hard to get over and I’m not sure the power doubling gets me over the hump. This will be an “I win” button in a number of game states, though.

Effortless Master (U): 5+-mana for a 6/5 vigilance menace isn’t great.

Glacial Dragonhunt (U): Requiring that the discard card be a non-land to deal damage makes this less interesting to me, especially given that it’s already sorcery speed. We just got Broadside Barrage, which I like more.

Gurmag Nightwatch (C): If you shortcut this as surveil 3, it makes it clear that it’s just fine and not worth the difficult mana cost.

Hardened Tactician (U): Unless you are pushing non-creature token themes, I think this is probably too narrow versus a free sac outlet. Makes me think of Fleshtaker, which didn’t really get there.

Host of the Hereafter (U): A 4-mana 4/4 that essentially grants modular is a cool piece, but I think it’s ultimately too weak to interaction.

Jeskai Brushmaster (U): Simple card, not worth the mana cost.

Jeskai Shrinekeeper (U): Better card, still not worth the mana cost.

Kheru Goldkeeper (U): I hope they keep pushing this leaves the graveyard theme, but I think right now we don’t have the density of quality cards to make it a reality or to include a medium 3-color card to support it.

Kin-Tree Severance (U): Over-priced if you are playing the best removal, but I do like that it gives Green an exile-based removal spell; even so, not sure this is worth a slot.

Lie in Wait (U): Great effect, hard mana cost. More decks would probably play Back for More.

Mammoth Bellow (U): If you can reach three colors, this is maybe slightly better than Roar of the Wurm, but I think that being mono-colored and having the cheaper graveyard cost pushes it over the top for me.

Marshal of the Lost (U): This attacks as a 4/4 deathtouch and is likely to be +2/+2 or better of “haste,” but I’m not excited unless you’re pushing tokens in White-Black and I don’t think a go-wide deck needs a bulky 4-drop.

Monastery Messenger (C): It’s not card advantage and a 2/3 flyer for 3+ mana isn’t a great baseline for a 2+ color card.

Reigning Victor (C): A 3/3 with mobilize 1 isn’t that interesting for CDE mana. And the ETB is a pretty minor effect.

Reputable Merchant (C): 4 total power for 3+-mana isn’t that exciting.

Riverwheel Sweep (U): A lot of work to get maybe better Drag Under.

Runescale Stormbrood (U): The dragon falls in between being a threat on its own and being a combo card a la Kiln Fiend. The omen side feels overly situational (although is obviously much better on the play).

Skirmish Rhino (U): Generically powerful, but the mana cost means it’s unlikely to be a Turn 3 play.

Temur Tawnyback (C): At 4-mana, it’s Keldon Raider. So unless you’re really pushing 3+ colors, it’s not there.

Whirlwing Stormbrood (U): As a flash threat, I like Thryx, the Sudden Storm better and the Green half is noticeably weaker.