Might of Old Krosa
Instant
Target creature gets +2/+2 until end of turn. If you cast this spell during your main phase, that creature gets +4/+4 until end of turn instead.
- CMC
- 1
- Mana cost
- Color identity
- G
- Rarity
- common
- Set
- Double Masters 2022
- Price
- $0.20
- EDHREC rank
- #9889
Might of Old Krosa pumps a creature by +4/+4 for a single green mana — as long as you cast it on your main phase, which in Commander is almost always the case. Sergeant John Benton and other pump-hungry commanders treat this as one of the most mana-efficient combat tricks available.
Best Commanders
Commanders with the highest synergy
Sergeant John Benton
Sergeant John Benton triggers on dealing combat damage to a player, so landing a single swing with a +4/+4 boost from Might of Old Krosa can threaten lethal or force favorable blocks before the ability even resolves.
Redshift, Rocketeer Chief
Redshift, Rocketeer Chief cares about buffing attacking creatures, and Might of Old Krosa's main-phase timing lines up cleanly with pre-combat pump to make a single attacker trade up or push through.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | legal |
| oathbreaker | legal |
In Legacy and Vintage, Might of Old Krosa sees play in Infect, where a +4/+4 boost on a one-drop poison creature frequently ends the game on turn two. Pauper runs it for the same reason — it's one of the best pump spells at common, and the one-mana rate is difficult to match. In Commander, the sorcery restriction is nearly irrelevant since you're attacking on your own turn anyway, which makes this strictly better than Giant Growth in most situations.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.20 bulk tier
At $0.20, Might of Old Krosa is firmly bulk — one of the best buys in green for what it does. Bulk rare prices this strong tend to stay flat unless a new combo or staple commander pushes demand, so there's no urgency beyond just picking up copies when you see them.
Explore
Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.