Can you use Teemo Strategist's ability to look at the top 5 cards and then use Reaver's Row to return him to base?

Ruling: Yes, you can use both abilities if Teemo is already at the battlefield. Both abilities trigger at the same time and you can decide how to order them on the chain. If you put Teemo higher on the chain, he'll resolve first.

Nuances:

• This does not work if Teemo is hidden, because you need to target Reaver's Row's ability when putting it on the chain, and only then can you react with Teemo's ability, so you can't target Teemo while he's hidden.