Instead, look up the specific card
The flavor of this card is that the Legionnaire heroically advances alone to fight the enemy while everyone stays behind in safety, but this translates into a laughably weak card
Mill decks love it, but so do self-mill strategies, making it a flexible threat that bridges both playstyles beautifully
Card advantage is a troublesome, much debated topic in Magic circles and a challenging one to tackle in terms of a multiplayer format like EDH
People are going to be going after three toughness hard, and 4/3 will trade down a lot, whereas a 3/5 will brick-wall a lot of people
Basically, when Orcish Bowmasters enters, or an opponent gets greedy when it comes to drawing cards, you get to deal one damage to something, and then also create an Army token or make that token stronger