Rakdos is the alliance of black and red, and its premise is that the only sin is hesitation. Black brings the willingness to pay any price; red brings the urge to pay it right now. Neither color believes in saving for later, so a Rakdos deck treats life total, cards in hand, and creatures on the board as fuel rather than savings. The plan is to convert all of it into damage faster than the opponent can stabilize.
On the battlefield this is the purest expression of pressure. Aggressive creatures come down early and attack into anything; burn spells reach over blockers to close the gap; sacrifice effects squeeze a second use out of a body that was going to die anyway. The guild is comfortable trading its own resources, even its own life, because it never intends to be in the game long enough for those costs to matter. Every point of damage is a step toward a finish line it expects to reach first.
The tension in Rakdos is fuel against time. A deck this committed to spending can run itself empty: if the opponent survives the opening flurry, Rakdos is often the player with no cards and no life buffer left. The strongest builds answer that by choosing their reach carefully, holding just enough burn or recursion to convert a stalled board into the last few points. Rakdos does not want a long game, but it has to respect that one might happen.
