 
Silver Dagger (Isaiah Corwen) is a fictional character appearing in American comic books published by Marvel Comics.
Publication history.
The character first appeared in "Doctor Strange" #1 (June 1974).
Fictional character biography.
Isaiah Corwen was a former criminal and Cardinal with the Catholic Church. He was driven mad by reading the "Darkhold", became a sorcerer, and began hunting magical beings, believing them to be great sinners. He took his name from his weapon, a silver dagger immersed in holy water that is effective against demons.
Silver Dagger once infiltrated the Sanctum Sanctorum and threw a dagger into Doctor Strange's back, believing him to be a demon-spawn. He also imprisoned and attempted to brainwash Clea, but became trapped in the dimension of Agamotto. He stole the Eye of Agamotto while Strange was pulled into the necromantic Orb of Agamotto.
Silver Dagger conquered the dimension within the Orb of Agamotto. Returning to Earth's dimension, he battled Doctor Strange, Spider-Man, Ms. Marvel, and Marie Laveau. He was stabbed by Leveau, and returned to the dimension of Agamotto. Some time later, Silver Dagger surrendered his left eye to Agamotto, who awarded it to Doctor Strange. Silver Dagger then attempted to slay the Werewolf by Night. With his troops, he battled the werewolf motorcycle gang, the Braineaters. He was bitten by the Werewolf and left at the mercy of his own troops, and his eye was inexplicably restored. Silver Dagger later battled Doctor Strange using his own Eye of Agamotto for the first time, but was taken into custody by Agamotto again. Silver Dagger later battled Strange, Clea, Rintrah, and Pip the Troll.
Powers and abilities.
Silver Dagger was originally an athletic man with a gifted intellect. He possesses an extensive knowledge of Christian theology, particularly of the apocalyptic sect he created; he has earned a D.d. and PhD. in theology from a Jesuit college. He has some knowledge of magic and sorcery, which he formerly employed for a variety of effects; he has since repudiated all use of cast magic as "Satanic". He can hurl bladed weapons with a high degree of accuracy, and has familiarity with a variety of automatic weapons. He has basic hand-to-hand combat skills, including some aikido, judo, and boxing. He has a high degree of skill for strategy and tactics used in commando-style low intensity conflict, and guerilla warfare techniques. Also, he is an exceptionally charismatic personality, possessing powers of persuasion which border on superhuman, especially when addressing large groups of people.
Silver Dagger's left eye was later replaced by the original Eye of Agamotto, and can project silver beams of mystical force. He wears a leather bodysuit, and the rear of his belt has a number of holders for throwing daggers. He carried specially-crafted 9" silver throwing daggers which have been dipped in holy water for enhanced effectiveness against supernatural creatures. Silver Dagger and his team of zealot commandos have been known to make use of a variety of automatic weapons which have been modified to fire silver bullets, as well as sophisticated communications devices and other items used for stealth combat.
References.
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