Cor and Winnn, Double Gnawers

Whenever Cor and Winnn, Double
Gnawers attacks, reveal the top two cards of
your library and put them into your graveyard. If two land cards were revealed
this way, create two 1/1 green Squirrel creature tokens. If two creature cards were revealed this way, double Cor and Winnn's power and toughness until end of turn.