They typically say something along the lines of whenever you draw a card and there are even cards that care about when you draw your second card each turn but those get their own list and you absolutely should read it after this one
Rise of the Eldrazi had great support cards like Wall of Omens that can get missed in all of the hoopla
Midrange Jund and Junk (Abzan) are your role models for midrange and Mardu isnt too far off
The fact that it needs colorless mana can be useful in archetypes that require access to other colors, but are predominantly green, such as Titan Field and Golgari Yawgmoth, and its ability can give it space in Domain Zoo to amplify the clock
You can only use lands that produce the colors in your commanders color identity, or that can produce colorless mana or mana of any color
force your opponent into action, drop Vinnie, and suddenly opponents are trapped between giving you free lore, or using removal cards that cost them valuable tempo