Winota, Joiner of Forces

You choose which player or planeswalker the Human is attacking. It doesn’t have to be attacking the same player or planeswalker that the non-Human creature is attacking.

Although the Human is an attacking creature, it was never declared as an attacking creature. This means that abilities that trigger whenever a creature attacks won’t trigger when it enters the battlefield attacking.

If more than one non-Human creature you control attacks, Winota’s ability triggers separately for each of them. For example, if three non-Human creatures attack, you won’t look at the top eighteen cards of your library at once; you’ll look at six, finish resolving the ability, and then repeat the process twice more as the other instances of the ability resolve.