Lost Leonin
Creature — Phyrexian Cat Soldier
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
- CMC
- 2
- Mana cost
- Color identity
- W
- Rarity
- common
- Set
- New Phyrexia
- Price
- $0.30
- EDHREC rank
- #12117
Lost Leonin puts infect on a two-mana body, and one pump effect turns a 10-life clock into a one-hit kill. Arahbo, Roar of the World's free +3/+3 trigger means Lost Leonin swings for lethal poison on turn three without spending a single extra card.
Best Commanders
Commanders with the highest synergy

Arahbo, Roar of the World
Arahbo, Roar of the World's eminence ability pumps Lost Leonin before combat for free, putting any opponent to seven poison counters from a single unblocked swing — the combo requires no setup beyond the two cards themselves.
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 |
Commander is where Lost Leonin actually matters — infect's 10-counter threshold is designed for 20-life formats, and the one-on-one damage math in Commander makes a single evasive swing with a pump spell immediately threatening. In Pauper it's a legal common, but infect aggro there runs faster, more evasive threats and Lost Leonin's lack of evasion hurts it. Legacy and Vintage have access to the full infect suite, and a vanilla 2/1 infect for two competes poorly against Glistener Elf and Blighted Agent — it sees no meaningful play in either format.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.30 bulk tier
At $0.30, Lost Leonin is firmly bulk — easy to acquire as a four-of without thinking about budget. Bulk infect commons don't appreciate unless a new commander or mechanic spikes demand, so treat it as a cheap role-player and nothing more.
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Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.