Since counterspell is a reaction, the caster (the wizard in your case) can cast another spell (fireball) just after counterspell.
What happens if you counterspell a counterspell?
AceCalhoon’s answer is only mostly correct. While counterspell can be blocked with another counterspell, a single wizard could not counterspell a counterspell that targets a spell he is casting. Although he can take reactions, he cannot actually cast counterspell in the middle of chanting fireball.
Can you use your reaction to cast counterspell?
You CAN use your reaction to cast Counterspell, but you will lose the original spell you were casting and the result would be the same. The only difference being that you wasted 2 spell slots instead of one. If you are attempting to cast a spell, let’s call it Fireball, then someone within 60′ of you can use their reaction to cast Counterspell.
Can You counter a counterspell on your own turn?
According to the rules of components on PHB 203, “If you can’t provide one or more of a spell’s components, you are unable to cast the spell.” You need multiple wizards for this, or a sorcerer with the subtle spell Metamagic. No. You can’t counter Counterspell on your own turn by using your Reaction to cast Counterspell.
How tall do you have to be to counterspell a spell?
Counterspell tells you: 1 reaction, which you take when you see a creature within 60 feet of you casting a spell. Counterspell itself a spell and if your enemy uses the spell he has to be in 60ft range (unless he uses meta-magic).
Can a single Wizard counterspell a fireball spell?
AceCalhoon’s answer is only mostly correct. While counterspell can be blocked with another counterspell, a single wizard could not counterspell a counterspell that targets a spell he is casting. Although he can take reactions, he cannot actually cast counterspell in the middle of chanting fireball.
