Yes, the spell is cast. This will count for “on cast” triggers, Storm, Aetherflux Reservoir, Approach of the Second Sun and Commander Tax.
Does a countered spell trigger prowess?
Prowess goes on the stack on top of the spell that caused it to trigger. It will resolve before that spell. Once it triggers, prowess isn’t connected to the spell that caused it to trigger. If that spell is countered, the ability’s effect will still resolve.
Can a counterspell target itself?
No, it can’t. A spell is never a legal target for itself. You can’t redirect a target to an illegal target.
What happens if you counter a spell in Magic The Gathering?
At that point, a player could counter your spell, but the triggered ability is still there as a completely separate thing. 601.2. To cast a spell is to take it from where it is (usually the hand), put it on the stack, and pay its costs, so that it will eventually resolve and have its effect.
Do you know all targets of a spell?
Yes, you will know all targets of a spell as soon as it is cast. 601.2. To cast a spell is to take it from where it is (usually the hand), put it on the stack, and pay its costs, so that it will eventually resolve and have its effect. Casting a spell follows the steps listed below, in order.
What happens when a spell goes onto the stack?
Any spell—creature, instant, artifact, whatever. It goes onto the stack. The player whose turn it is (in this case, me) gets a chance to respond. This chance to respond is called “priority.” Then my opponent gets a chance to respond. If neither of us do, then the spell just happens.
Can a spell be triggered if it is not cast?
Because they aren’t cast or activated, triggered abilities can trigger even when it isn’t legal to cast spells and activate abilities. Effects that prevent abilities from being activated don’t affect them. Split Second (As long as this spell is on the stack, players can’t cast spells or activate abilities that aren’t mana abilities .)