Ertha Jo, Frontier Mentor {2}{R}{W}
Legendary Creature — Kor Advisor
Identity
Boros
EDHREC rank
#8,318
Cheapest printing
US$0.23
TCGplayer
Printings
1
When Ertha Jo enters, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."
Whenever you activate an ability that targets a creature or player, copy that ability. You may choose new targets for the copy.
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.