Do Damage Boosts Stack in Marvel Rivals?

Short answer: yes — and they stack multiplicatively. Two 12% damage boosts don't give you 24% extra damage. They give you about 25.4%. Here's exactly how the math works, which abilities count, and how top players chain buffs to burst through tanks.

The stacking formula

Damage boosts in Marvel Rivals are applied as separate multipliers, then combined. The formula is:

final_damage = base_damage × (1 + boost_A) × (1 + boost_B) × ...

Example: Luna Snow's ultimate applies roughly a 12% team damage boost. Mantis's Inspiration on the same target adds another 12%. Combined:

1.12 × 1.12 = 1.2544  →  +25.44% damage

That's slightly more than pure addition (24%), which matters over long fights and against high-HP tanks like Hulk or Thor.

What counts as a damage boost

• Luna Snow — Fate of Both Worlds: team-wide damage/healing boost during ult.
• Mantis — Inspiration: single-target damage boost stack, stronger the more stacks applied.
• Rocket Raccoon — C.Y.A.: revive beacon that grants an outgoing damage aura.
• Invisible Woman — Force Physics: field buffs allied damage inside its radius.
• Team-up abilities: Gamma Charge (Hulk + Iron Man/Doctor Strange), Ragnarok Rebirth (Hela + Thor + Loki), and other synergies apply their own damage multiplier.

Is there a cap?

There's no hard percentage cap in the game files, but there is a practical ceiling. Most boosts are short (5–12s) or locked behind ultimates, so overlapping three or four of them is rare outside of a coordinated push. In a typical stacked window you'll see +40% to +60% effective damage — enough to one-shot squishies and delete tanks in seconds.

How to abuse stacking in ranked

1. Coordinate Luna's ult with your DPS's ult, not before.
2. Stack Mantis Inspiration on your hitscan (Hela, Hawkeye, Punisher) before engaging.
3. Trigger team-up buffs on cooldown — they don't compete with support buffs, they multiply on top.
4. Push tanks during the overlap window — that's when their effective HP collapses.

TL;DR

• Damage boosts stack — multiplicatively, not additively.
• No hard cap; practical ceiling is ~40–60% in a stacked window.
• Team-up buffs count and multiply with support buffs.
• Coordinated ult + Mantis + team-up is how top teams break tanks.