The most obvious is to mill your opponents deck from different angles with cards like Glimpse the Unthinkable, Kitsune's Technique, Umbris, Fear Manifest, Krang & Shredder, Tasha's Hideous Laughter or Space-Time Anomaly
Galvanic Bombardment R Instant Galvanic Bombardment deals X damage to target creature, where X is 2 plus the number of cards named Galvanic Bombardment in your graveyard
Pact means you can advance your own game plan without too much fear of a disastrous combat phase
But getting a spell from the top 4 cards of your library sounds even better
This makes it a powerful card, but not something that every deck will be able to play
[29] This card was made for the Munch exhibit at the Tokyo Metropolitan Museum of Artthere are 4 other cards showing Eevee, Pikachu, Mimikyu, and Rowlet imitating The Scream