Gauntlet Mono Red

This is a slightly modified version of my Expedition mono red deck. It's successfully finished multiple consecutive gauntlets with 7/0. Be careful about investing weapons/buffs into a single unit too early when playing against decks that field Slay or Permafrost, otherwise always play to maximize damage and trade into the AI's units before they can grow too strong.

Gemblazer Cannon feels like it is optional in this deck. In its place I would probably add one more copy of Pyrotech Explosion, and either an extra copy of Sanity Scorcher or an extra copy of Spiked Helm depending on which direction you want to weight your power curve. Another option is to replace it with Ornate Katana if you want more card draw, although that could backfire if you are trying to empty your hand to set off Depth Charges, or you could try Shogun's Scepter if you want more units.

Check out my Skycrag Warcry deck if you prefer a little more control over the AI units and don't mind having to deal sometimes with the RNG of getting your dual influences.