MTG Salvation

I've always played it as RFG it and draw a new card. Simple mistake.

Could see that becoming more difficult if it was tutored for, or it was a cornerstone of their deck or whatever, but usually it's been a less experienced player who just didn't realize, and their deck isn't super tuned or tutor heavy or anything.

Generally-speaking I'd probably be ok playing vs a 1v1 decklist if I knew in advance. Sacrificing all the good fast mana is a pretty high cost to pay for prime time. If they said it was totally critical to their gameplan I'd probably just let them have it for that game at least. That combo in particular is relatively tame, though - I might get a bit saltier if someone vamp tutored for a channel so they could play multiple eldrazi titans on turn 2...I'd probably either just start a new game or tell them they have to RFG-cycle it or something. That would be a very unlikely scenario, though, I think if you're doing that it's probably because you're a bastard.