Hydroblast
Instant
Choose one —
• Counter target spell if it's red.
• Destroy target permanent if it's red.
Fire can be savage, but it is fickle. Water is always true, its flow steady and world-shaping.
Lake Hurwitz
Eternal Masters (EMA)
• #55Rulings
Hydroblast can target any spell or permanent, not just a red one. It checks the color of the target only on resolution.
(wotc • 2016-06-08)
The decision to counter a spell or destroy a permanent is a decision made on announcement before the target is selected. If the spell is redirected, this mode can't be changed, so only targets of the selected type are valid.
(wotc • 2004-10-04)
Rulings
Hydroblast can target any spell or permanent, not just a red one. It checks the color of the target only on resolution.
(wotc • 2016-06-08)
The decision to counter a spell or destroy a permanent is a decision made on announcement before the target is selected. If the spell is redirected, this mode can't be changed, so only targets of the selected type are valid.
(wotc • 2004-10-04)