Uno Reverse

X equals mana cost of countered spell or
amount of damage prevented.
When Cast You May Choose one:
• Counter Target Instant, Sorcery, or
Enchantment and Exile it.
You may cast It from exile as though it is an
Instant with no mana cost until end of turn.
You may only target the player who casted the original spell.
•Prevent all damage a target creature would deal.
Deal the same amount of damage to that creature.