mtg card database The Complete — How to Search Every Magic Card Magic: The Gathering cards and

If you pay the warp cost to cast a spell, that permanent will be exiled only if it's still on the battlefield when that triggered ability resolves

If you over draw the deck without hitting the win condition you find in the second sun archetype cards, which both add a second upkeep phase and that includes the extra draw, you can easily hit that necessary card amount

And since we know that there are many cards in the new Standard that are graveyard-matters cards (along with an entire SECOND mechanic (Undergrowth) that is purely a graveyard-matters mechanic and a THRID partial-graveyard mechanic in Jump-Start), it's safe to say that Surveil has the potential to do a lot of damage in the new meta

I think the math is (N * 2) + 2, where N is the number of Ratadrabiks you have