It doesn't have to be attacking the same player, planeswalker, or battle that Shaun is attacking
This deck quickly makes up for lost time with massive Eldrazi and other high mana value threats
If you're using printed tokens, great
Like most Magic: The Gathering cards, the value of Minsc & Boo, Timeless Heroes depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Secret Lair Drop)
If boards are roughly equal, Liliana's +1 ability will warp the game around efforts to remove her, a task made difficult by a steady stream of 2/2 Zombie chump blockers and extra cards being poured into the defending players' hand