A lynchpin in White Weenie aggro decks of the time, Adanto Vanguard was played alongside another Vampire card (in the loosest sense), Legions Landing
Legality depends on the tournament format -- Human Token // Wolf Token can be legal in some formats and banned or restricted in others
I always liked how nobody wants to spend removal on it right away
If a player is instructed to put a card into their graveyard from their library without using the word "mill," (by the effect of Rowan's Grim Search from Wilds of Eldraine , for example), that card isn't a legal target for Tato Farmer's last ability
Life is a resource in Magic: The Gathering, like anything else, so be sure to spend it if you feel like it will draw you into your game-winning card or combo
It doesn't have to be attacking or anything, you can just invest some mana to kill off stuff