Lion's Eye Diamond ($817) Lion's Eye Diamond (also known as LED) was originally seen to be pretty bad, but is now a 4-of in Legacy decks and worth an incredible chunk of money

$0.49 Theoden, King of Rohan The Lord of the Rings: Tales of Middle-earth $0.49 Elrond, Master of Healing The Lord of the Rings: Tales of Middle-earth $0.79 Faramir, Prince of Ithilien The Lord of the Rings: Tales of Middle-earth $0.49 Gimli, Mournful Avenger The Lord of the Rings: Tales of Middle-earth $0.49 Elrond, Master of Healing The Lord of the Rings: Tales of Middle-earth $0.49 Aragorn, Company Leader The Lord of the Rings: Tales of Middle-earth $0.49 Fangorn, Tree Shepherd The Lord of the Rings: Tales of Middle-earth $1.49 Pippin, Guard of the Citadel The Lord of the Rings: Tales of Middle-earth $1.99 Elvish Mariner The Lord of the Rings: Tales of Middle-earth $0.49 Elrond, Lord of Rivendell The Lord of the Rings: Tales of Middle-earth $0.49 Arwen Undomiel The Lord of the Rings: Tales of Middle-earth $0.79 Gandalf the Grey The Lord of the Rings: Tales of Middle-earth 0 results found
So collecting multiple of these codes will not give you multiple free entries
Mukotai Ambusher The best thing I can say about Mukotai Ambusher is that 3/2 is reasonably good stats for a beater in cEDH
This is true even if you somehow no longer control a commander as you finish casting the spell