By playing the Weavile back down and using his Pok-Power, they have to think twice about picking up that heavily damaged Stage 2 attacker or highly useful Pok-Power Pokmon (Uxie), as you can just discard that crucial Pokmon when it goes back to their hand
The deck has all of these, with Dragon MageDragon Mage and Dream PillagerDream Pillager getting us more cards to play, Drakuseth, Maw of FlamesDrakuseth, Maw of Flames, Hoard-Smelter DragonHoard-Smelter Dragon, and Tyrants FamiliarTyrants Familiar handling the removal, and Savage VentmawSavage Ventmaw and Rapacious DragonRapacious Dragon giving us some extra mana
We dont cast anything, hoping to flip our Werewolves
There are no restrictions on mana value here, so Eldrazi Titans fit into the Hideaway just as easily as tiny one drops
This happens due to the new rule 701.25f introduced in Shadows over Innistrad