Leonardo, Big Brother

Mana cost: {2}{W}
Type: Legendary Creature — Mutant Ninja Turtle
Power / toughness: 1 / 3
Set: Teenage Mutant Ninja Turtles #14 (common)
Price: $0.19 USD

Sneak {W} (You may cast this spell for {W} 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.

Leonardo, Big Brother has 1 printing, first in Teenage Mutant Ninja Turtles (2026). EDHREC ranks it #14,055 among Commander cards. It appears most in Dark Leo & Shredder decks (1,783 on EDHREC). It has 3 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: legal
modern: legal
pioneer: legal
standard: legal
brawl: legal

Commanders that run Leonardo, Big Brother most

Deck counts from EDHREC.

Often played with Leonardo, Big Brother

Cards that show up in the same decks on EDHREC.

Rulings

2026-01-27: Although a creature put onto the battlefield this way is attacking, it was never declared as an attacking creature. Abilities that trigger whenever a creature attacks won't trigger when that creature enters attacking.
2026-01-27: If a creature spell's sneak cost was paid, the creature it becomes enters tapped and attacking the same player, planeswalker, or battle as the creature that was returned to its owner's hand to pay its sneak cost. This is a rule specific to sneak; in other cases, when a creature is put onto the battlefield attacking, that creature's controller chooses which player, planeswalker, or battle it's attacking.
2026-01-27: Spells can only be cast for their sneak costs any time you could play an instant during the declare blockers step on your turn (after your opponent has decided whether to block).

Printings

Teenage Mutant Ninja Turtles #14