THE CARD
Name: Tulzscha
Set: MSGS
Type: Monster
Subtype: Outer God
Requirements: Underground Location, Solstice
Special Effect Box: It is Day. Bury any Night or Day cards in play; new ones may not be played while Tulzscha is in play. While this card is in play, three Passes are required to end card play in a Round. No Investigator may gain Sanity.
CLARIFICATIONS
As with all GOOs, YOU must have the requirements in play to bring out Tulzscha. That is, your Current Location must be Underground, and you must have a Solstice card out. There are numerous Underground Locations, most notably in Boston (2), in Kingsport (2), scattered across the Middle East (3), and scattered about Europe (3). Currently, the only Solstice card is Dawn of the Solstice.
As is noted, three Passes are required to end card play in a Round. This means there must be a total of three Passes, and during that time, the person who initiated Passing must do nothing except Pass (not even lose a Turn). Typically, this means that someone Passes three times in a row, but there are numerous other permutations.
QUESTIONS
Q: What happens if I play An Unexpected Calamity when Tulzscha is out?
A: Not a lot. When Tulzscha is in play, three Passes are required to end card play in a Round. Since GOO powers always override anything else in the game, this means that An Unexpected Calamity does not end the Round. However, the "Pass" that is announced when An Unexpected Calamity is played does count as one of the three.
Q: What happens if I cast Mao Ceremony, allowing me to avoid the effects of all GOOs in play, and I then play a Night Event? Is it Day or Night?
A: It's Night for you only. If you have any Cards requiring Night to be in play to use them, you can. In addition, all Monsters in your threat function as if it is Night. Your Night Card will get Buried at the end of the Round, as soon as the Mao Ceremony wears off.
STRATEGIES
In order to make really good use of a GOO, you need to design a deck around it. A few deck strategies are examined here, following the Standard GOO Strategies section.
Standard GOO Strategies - Use the Shining Trapezohedron to help get your GOO out. Gain Sanity while your GOO is out by using the Mao Ceremony. Protect your GOO from the Sign of Eibon by always adding Monsters to your Threat very early in the Round (Zombies are also good for this). Use Thirty-Five Abominable Adulations of the Bloated One or Wakalea to keep your GOO in play. Use the Servitor of the Outer Gods in your deck.
The Long Life Deck - In most Mythos games, you get "stuck" at a certain point in a Round, can't play any more cards, and thus Pass. The idea of the Long Life Deck is to build a deck which avoids this. Definitely keep all Locations in the same Region. Keeping everything in the same Subregion is even better (eg, Arkham has 24 different Locations). Concentrate on either Tomes or Artifacts in your deck, but not both. Make sure all Spells you put in your deck are usable in every single Tome. Finally, make sure that your Adventures don't depend on unique Cards which might tempt you to idly Pass, waiting for that last card. Into this mix add: an Investigator with low Min and Max, a Tulzscha or two and a handful of In the Nick of Times. You should be able to play late into the Round, after other people have already expended their cards. Note that In the Nick of Time will really make your opponents cry: it voids all Passes, and three are required when Tulzscha is out.
The Day Deck - Tulzscha makes it Day and forbids the playing of Night cards. Thus, you can more efficiently use the powers of cards that get better during the Day. Currently, this list only includes Hunting Horrors and Fire Vampires, but it's a start!
COUNTER STRATEGIES
The standard GOO Counter Strategies are the best to use against Tulzscha:
Standard GOO Counter Strategies - Bury the GOO with the Sign of Eibon, the Elder Sign, or Wakalea. Use the Mao Ceremony to avoid the GOO's effects. Pass to cause the GOO to quickly leave play (though this last strategy only works in a limited manner on Tulzscha). Use the Servitor of the Outer Gods in your deck.