It's a neat effect for red, but it doesn't read "draw a card." Any number of blockers will make this effect a dud
Im happy to show those decks off
If you are buying Vanguards individually, you can expect to pay between $1 and $5 for a majority, although some Vanguards (especially those from the fourth series, which I'm guessing must be in low-supply) maintain significant value
Rigo, Streetwise Mentor itself gives you a card, and its flexible enough that you can either focus on the attack triggers and saboteur effects (Delney, Streetwise Lookout and Enduring Curiosity, for example), or you can try to overwhelm your opponents with sheer numbers in a token build
Zombies put free sacrifice outlets to great use, and Carrion Feeder is all the more desirable because it shares the relevant creature type
Drawing a card is fairly consistent especially in white with cards like Thraben Inspector being so popular in most cubes