While you may have to wait a turn before using any Supporter you fetch, you can play the Stadium cards immediately.
For every spell card you played that turn, you could add the same number of Spellbook cards from your deck to your hand and then summon a Spellcaster-type monster with a level equal or lower to that number
Arkham Horror : There are tons of instant fail conditions (Doom Track fills up, Too many gates are open at once, all three acts of The King in Yellow are performed...), and the normal ways to win are to either seal gates or kill the Ancient One after he awakens, which is difficult for most (and impossible for Azathoth, since his attack is Destroy the Universe )
Life in the Rain It's raining, it's pouring, here's the cards required for the 'Life in the Rain' Secret Mission: Sewaddle #15 (One Diamond) Politoed #35 (Three Diamond) Castform Rainy Form #40 (One Diamond) Toxel #60 (One Diamond) Parasol Lady #152 (Two Diamond) Shroomish #158 (Full Art / One Gold Star) Sobble #203 (Immersive / Three Gold Star) Rewards: 12 Wonder Hourglasses and 2 Shop Tickets
This gives only 46 booster packs rather than 50 packs for $50 value
Only 5000 of these plates were made and are numbered so that you have a unique sample in your hands