Thryx, the Sudden Storm
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Flash
Flying
Spells you cast with mana value 5 or greater cost 
less to cast and can't be countered.
4/5
Illustrated by Mathias Kollros
Rulings (6)
Jan 24, 2020
A spell or ability that counters spells can still target spells you control with mana value 5 or greater. When that spell or ability resolves, your spell won't be countered, but any additional effects of the countering spell or ability will still happen.
Jan 24, 2020
For spells with 
in their mana costs, use the value chosen for X to determine the spell's mana value.
Jan 24, 2020
If Thryx enters the battlefield while a spell with mana value 5 or greater that you cast is on the stack, that spell can't be countered, even though you don't get the discount.
Jan 24, 2020
Players can't attempt to remove Thryx to raise the cost of a spell you wish to cast, but they can remove it to allow their spells and abilities to counter your spells.
Jan 24, 2020
Thryx's last ability doesn't apply to itself while it's a spell.
Jan 24, 2020
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Thryx). The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
