If you played even a little vintage with Shops or Eldrazi, you've had to do this before. I'm curious where people land on the issue.
Given that: It's game one, you're on the play, your only turn 1 play is Ancient Tomb-> Phyrexian Revoker. You don't know who your opponent is, or what they're playing.
Given that: You aren't getting a "soul-read" on what they're playing by looking at their haircut or their outfit or their MTGO username.
but if you would otherwise factor that in, mention that
Given that: The composition of your hand is such that you want to play the Revoker now instead of waiting.
but if you might wait, suggest what sort of hand would make you do that
- What card would you name if you're playing TKS Shops or Car Shops
- What card would you name if you're playing White Eldrazi
- How would it change either of those answers if you also had a Chalice of the Void in hand
Don't feel like you need to answer all three if you're only comfortable with one of those decks. I'm far more interested in how people make these decisions than I am in the answers themselves.