Urza, Lord High Artificer Urza, Lord High Artificer is an extremely powerful card that managed to frustrate players in multiple formats
It's not the most mana-efficient option at doing either thing, but it can be the best option in a deck that can make good use of both effects
A challenge of designing Equipment cards involves fitting them into the noncreature slots of the deck, so living weapon was a way to allow the cards to go into a creature slot
Lose The Game Effects/Instakills There are a number of alternate wins that can be gained through cards that cause opponents to lose the game, rather than make you explicitly win
My double-talking is only going to hurt the sort of players who may eventually need to recoup their investment or they wont be able to buy the game at all
(9/25/2020) If an effect instructs a player to choose a card name, the name of either face may be chosen