Thassa, Deep-Dwelling [Theros Beyond Death] XY74 that player can't cast spells

that player can't cast spells or activate abilities and plays with their hand revealed

For this card's Synchro Summon

"To the tutors

Set: Crimson Crisis Card type: Tuner Monster Rarity: Super Rare Attack: 100 Defense: 1100 When this card is Normal Summoned

You may activate either 1 or both of the following effects (the following effects cannot be activated during the turn this card was Special Summoned):

Thassa, Deep-Dwelling [Theros Beyond Death] XY74 that player can't cast spellsSet: Theros Beyond Death Type: Legendary Enchantment Creature God Rarity: Mythic Cost: {3}{U} Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. At the beginning of your end step, exile up to one other target creature you control, then return that card to the battlefield under your control. {3}{U}: Tap another target creature.