Leonardo, Worldly Warrior {7}{W}
Legendary Creature — Mutant Ninja Turtle
WhiteCommander: legal
Identity
White
EDHREC rank
#18,670
Cheapest printing
US$0.38
TCGplayer
Printings
1
Affinity for creatures (This spell costs {1} less to cast for each creature you control.)
Double strike (This creature deals both first-strike and regular combat damage.)
Keywords: affinity, double strike
Every printing
highest TCGplayer market first; a card with only a thin single listing shows its low
In short
A Commander deck is a commander and 99 other cards, one copy of each (except basic lands), all inside the commander's colour identity. Paste a full list into the deck price calculator to price it and check it against the format.