Of all the cards on this list, few keep you aggressive and get you to a win like this righteous sword in your hand
Opt sees very low play in Standard since the exit of Jeskai Control, only seeing some play in Jeskai Superfriends
Enchanted creature has You have no maximum hand size and Whenever this creature attacks, if you have ten or more cards in hand, it gets +10/+10 until end of turn. Illustrated by Irina Nordsol Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
So with all of that in mind, its perhaps not surprising that this Dark Magician Girl card has a current average selling price of around $420
In my opinion, the strongest things you can do in Mono Red are: "Glass cannon" decks that either quickly pop off and win before opponents can stabilize, like Storm, Krenko, Purphoros, Slicer Crushing nonbasic lands, aka defeating a large chunk of players with a single Blood Moon The problem with these two strengths is that they aren't always the right pick for casual tables
Usually you want one effect and a second is just quite nice