Leonardo, Big Brother
Legendary Creature — Mutant Ninja Turtle
Sneak 
(You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.)
Leonardo gets +1/+0 for each other creature you control.
- CMC
- 3
- Mana cost
- Color identity
- W
- Rarity
- common
- Set
- Teenage Mutant Ninja Turtles
- Price
- $0.20
- EDHREC rank
- #15965
Leonardo, Big Brother lands a guaranteed Surveillance counter on every creature you control whenever Splinter, Radical Rat triggers — that's a board-wide clock ticking every turn, not just on one target. At two mana for a 2/3, the cost is nearly irrelevant for what amounts to a passive engine piece.
Best Commanders
Commanders with the highest synergy
Splinter, Radical Rat
Splinter, Radical Rat's trigger distributes Surveillance counters, and Leonardo, Big Brother turns that into a board-wide threat accumulator — every creature you control grows into a win condition each time Splinter fires.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | legal |
| vintage | legal |
| pauper | legal |
| oathbreaker | legal |
In Commander, Leonardo, Big Brother is a role-player in any Splinter, Radical Rat build, converting a recurring triggered ability into exponential pressure across your entire board. Outside that pairing, the card needs a dedicated Surveillance-counter shell to justify a slot, which narrows its Commander homes considerably. In 60-card formats like Modern and Pioneer, the effect is too narrow and the stat line too modest to compete for two-mana creature slots. Pauper is where bulk rares sometimes find niche homes, but Leonardo asks for a specific synergy that isn't naturally present in that format's staple archetypes.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.20 bulk tier
At $0.20, Leonardo, Big Brother is deep bulk — you're paying for cardboard, not scarcity. Demand is niche enough that the price is unlikely to move unless Splinter, Radical Rat decks spike in popularity.
Explore
Sources
Mentioned
- Splinter, Radical Rat
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.