Commander Damage & Lethal Turn Calculator
Estimate how quickly your commander can knock out one player or the whole table. Assumes your hits connect.
What Is This MTG Commander Calculator?
In Commander (EDH), players usually start at 40 life, but there is a second loss condition: 21 combat damage from the same commander. That rule changes combat math a lot. A 7-power commander can end a game in three hits, even if opponents still have life.
This calculator helps you answer practical questions mid-game:
- How many successful hits do I need for commander lethal?
- How many turns does that represent based on my combat setup?
- Is commander damage faster than regular life damage right now?
- How long to eliminate all remaining opponents if I stay on one target at a time?
How to Use the Inputs
Core Fields
- Opponents Remaining: Number of players you still need to defeat.
- Opponent Life Total: Typical is 40 in Commander, but some games vary.
- Life Damage Already Dealt: Prior chip damage from any sources.
- Commander Damage Already Dealt: Existing damage from your commander to the current target.
- Current Commander Power: Use real-time power with buffs/equipment already applied.
Advanced Combat Fields
- Power Increase After Each Hit: Useful for commanders that grow during combat loops.
- Successful Hits Per Turn: Represents extra combats, double attack windows, or copied combat steps.
- Damage Prevented Per Hit: Models effects like static prevention or recurring shields.
- Double Strike: Doubles combat damage per successful hit event.
Commander Math You Should Always Know
Good Commander pilots track both clocks:
- Life clock: Reduce from 40 to 0.
- Commander clock: Reach 21 commander damage from one commander.
The faster clock is your real win line. Sometimes a tall Voltron threat ignores life totals entirely; sometimes trample and wide pressure make regular life damage faster than commander damage. A calculator keeps you from guessing and missing lethal.
Practical Strategy Tips
1) Recalculate After Every Major Combat Change
New sword equipped? Temporary anthem? Double strike granted? Re-run the numbers. Commander games swing quickly, and one extra point of power can shave off entire turns.
2) Prioritize Reliable Connections Over Raw Power
If you cannot connect, your damage math is irrelevant. Evasion, protection, removal timing, and combat trick windows often matter more than an extra +1/+1 in deck construction.
3) Use the Table Estimate for Threat Assessment
When your deck can present fast commander lethal, the table will treat you as archenemy. Use turn estimates to decide when to hold back versus when to commit and close.
FAQ
Does commander damage carry between players?
No. Each player tracks commander damage separately. If you hit Player A for 10 and Player B for 10, neither player is dead to commander damage yet.
Does this calculator include infect/toxic kills?
Not directly. This version focuses on commander damage and life damage racing. You can still model infect-like pressure by adjusting life-based assumptions manually, but poison counters have separate thresholds and should be tracked independently.
What assumptions does it make?
It assumes your successful hits connect each turn and that your entered values remain stable. Real games include removal, fogs, blockers, and politics, so treat results as tactical planning guidance.
Bottom Line
Commander is full of hidden math edges. If you can quickly identify the shortest lethal line, you will sequence attacks better, conserve resources, and convert more winning positions. Use this calculator as your combat shortcut and spend your mental energy on what really wins pods: timing, table reads, and clean execution.