While not a mono green deck, I have a Simic (blue/green) Sea Monster deck that I play this card in
Restrictions breed creativity, after all
Additionally, if you have Pascal in play she gains Ward, meaning she cant be chosen except in a challenge
But the snazzier stuff is like so: U/W Control | Pioneer | Benni_R, Top 8 MTGO Super Qualifier Companion (1) 1 Kaheera, the Orphanguard Planeswalkers (6) 2 Teferi, Hero of Dominaria 4 The Wandering Emperor Instants (19) 1 Dig Through Time 1 Quick Study 2 Change the Equation 2 Get Lost 2 Hallowed Moonlight 2 Memory Deluge 3 Dovin's Veto 3 Make Disappear 3 March of Otherworldly Light Sorceries (3) 1 Farewell 2 Supreme Verdict Enchantments (5) 2 Shark Typhoon 3 Temporary Lockdown Kaheera can play the usual Companion role in Game 1
Ramp plus card draw plus creatures is great
They don't care if their opponent draws a card as well, they just need to keep piling on the pressure and this card allows them to do that