Game thinks some spells can be cast when they can't

[Zerrisx]

Extension of related issue #6698

Note that not all of these will need to be changed - some may be intentional due to the difficulty of knowing when a card might be legal to cast; it's better to allow more freedom than less.

Still Bugged

• Castle Garenbrig - thinks it can be used to cast non-creature spells, like Caged Sun
  

• Eldrazi Temple - thinks it can add {2} for any spell, not just eldrazi
  

• Kentaro, the Smiling Cat - Samurai think they can all be cast with Kentaro in play, even if you have no mana available
  

• Rosheen Meanderer - gets considered for whether spells can be cast even when they don't have X in their cost
  

• Sanctum Prelate - cards locked out by Sanctum Prelate still think they're castable
  

• Sunglasses of Urza - cards seem to think this allows for rainbow mana instead of just red mana
  

Fixed

• Chandra's Embercat - thinks it can be used to cast any spell, not just elementals and Chandras.
  

• Dalakos, Crafter of Wonders - gets counted at CC for all spells, not just those it can help cast
  

• Daze - thinks it can be cast with no islands in play and no mana sources
  

• Firemind Vessel - two vessels think they can cast Archangel of Tithes, but because they have to make different colors of mana, they can't
  

• Geosurge - thinks the mana can be spent on any spell, not just creatures and artifacts
  

• Grand Architect - thinks the mana can be spent for any spell, not just artifacts
  

• Gnarlroot Trapper - thinks the mana can be spent on any spell, not just elves
  

• Guild Globe - two globes and four islands think they can cast Archangel of Tithes, but because they have to make different colors of mana, they can't
  

• Jodah, Archmage Eternal - every card thinks it can be cast if Jodah is on the battlefield, even if you have no mana to pay for the ability.
  

• Rhystic Cave - is being treated as a mana source, which it kind of isn't since you can only activate it at instant speed; it should be closer to how we handle Arbor Elf (i.e. don't count it for calculations)
  

• Sivvi's Valor - thinks it can be cast for free, even if you don't have a plains
  

• Willbender - thinks it can be cast at all times - including during my opponent's turn with no mana sources available. (It will only let you put it on the stack at sorcery speed, though it still doesn't check for any available mana sources when doing so)
  

[Alex-Vasile]

Could not reproduce Sivvi's Valor issue.