A Sorin, Imperious Bloodlord proxy lets you run this powerful staple across every deck you own without paying secondary market prices
After all, yo u don't want to be surprised by what you draw
My primary criteria for group slug cards is simple: I need permanent cards that give you a steady advantage, preferably when your opponents do something to maximize the value, but many of them simply trigger on your upkeep, end step, and so on
Use the number of charge counters on it as it last existed on the battlefield to determine how many cards to draw.
Then the five-cost sorcery Traverse ramps for your highest power - great with a Commander you know about already, or in other power-matters or Voltron stuff
If you topdeck it late, you're not going to be sad