Study Mechanic semi-rework

Study cards are now all 0-cost cards. Too often, the cost to get Study online, plus the cost to play the Study cards, meant that the cards didn't get played in favor of doing things that had better synergy with your deck, especially in later acts. Making them 0-cost also gives the Study cards greater synergy with 0-cost recursion, and makes 'Quick Study' not drop a card into your hand you can't play, which I've seen new players regularly do. This required a lot of balance changes that will likely still be ongoing:

Quick Study - Now gives 2 Spire Boss cards when upgraded instead of reducing HP loss.

Study the Spire - Energy cost reduced to 1. Once again lasts for 4 turns.

Tiny Bowler Hat now reduces the cost of the generated Study the Spire card to 0.

ALL Study cards are no longer Ethereal. They still Exhaust.

Ca-Caw - When upgraded, gives an immediate 1 Strength instead of increasing Ritual to 2.

Charge-Up - Block reduced, doesn't give an extra Strength when upgraded.

Collect - Block reduced, doesn't give an extra Strength when upgraded.

Dark Void - Damage reduced.

Donu's Power / Deca's Protection - Doesn't give Artifact unless upgraded.

Defensive Stance - Block and Metallicize reduced, only increases Block upgraded.

Defensive Mode - Block and Thorns reduced, only increases Block upgraded.

Divider - Damage reduced. Renamed to "Hexaburn" since it has no HP interactions.

Face Slap - Damage reduced.

Flail - Damage reduced. Doesn't give extra Artifact when upgraded.

Guardian Whirl - Damage reduced.

Head Slam - Damage reduced.

Hyper Beam - Damage reduced. Renamed to "Slime Beam" since... it's not quite so Hyper any more.

Last Stand - Gives 1 Strength, and an extra 2 (3 upgraded) if below 50% HP.

Poly Beam - Damage reduced.

Sear - Damage and Burn reduced. Doesn't upgrade Burn amount when upgraded.

Time Ripple - Block reduced.

You Are Mine - Weak/Vuln dropped to 2, 3 upgraded.

Venom Tackle now costs 1 energy, deals 8 (*10) damage, 3 damage to you, and applies 4 (*6) Poison. Tackles needed more variety than having only Combo and Hungry Tackle be a 1-cost. There's a 4/3 split now between 2 and 1 cost Tackles.

Fixed Vicious Tackle not having the Tackle tag, so it couldn't spawn through Goop Tackle.

Fixed Bronze Slime (Study card) SFX playing at the end of the slime attack phase instead of when the Bronze slime attacks.

Hyper Beam (Study card) now has green beam visuals.

Form of Puddle has new visuals. Now you too can become an actual slime puddle for a turn.