card count for game

out of curiosity does anyone know if the game can support multiples of a card, like. ive noticed no deck is made with more than 4 copies of a card, except for the few that can, because sealed play was built into it is it possible to build a deck with multiples say 10 doomed necromancers? or will it crash? im simply using doomed necromancer as an example, it could be 24 black lotus cards with 36 (3) cost for all i care. but is it possible in general without conflicting with the games programming and saying "you tried this according to the rules you automatically loose,"?