Rakdos Madness Burn is a fast drain-and-burn deck that combines direct life loss from Alms of the Vein madness with aggressive creatures and Fiery Temper to close games quickly before you can develop your board. Blue Elemental Blast and Hydroblast are your most important sideboard cards — they counter Fiery Temper, Faithless Looting, and Lightning Bolt while also being able to neutralize Kitchen Imp or Sneaky Snacker on the stack. The extra Nihil Spellbomb is relevant here because it exiles their graveyard to prevent Alms of the Vein from being cast at madness cost off Faithless Looting, which is their most efficient source of life drain. Krark-Clan Shaman comes out because their creatures are mostly relevant for combat or sacrifice, and a sweeper that also costs you artifacts slows your own development in a race. Race them with Myr Enforcer and Refurbished Familiar while using Galvanic Blast to remove their key damage-triggering creatures like Voldaren Epicure before they generate value.