Osgood, Operation Double {2}{U}{U}
Legendary Creature — Human Alien Shapeshifter
BlueCommander: legal
Identity
Blue
EDHREC rank
#13,415
Cheapest printing
US$0.34
TCGplayer
Printings
4
When you cast this spell, create a token that's a copy of it, except it isn't legendary.
{T}: Add {C}. Spend this mana only to cast an artifact spell or activate an ability of an artifact.
Paradox — Whenever you cast a spell from anywhere other than your hand, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Keywords: investigate, paradox
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.