You can do it. Because of the only somatic component of Counterspell. Since counterspell is a reaction, the caster (the wizard in your case) can cast another spell (fireball) just after counterspell.
Can you counterspell healing word?
Turns and Rounds are different things, so if you bonus action Healing word, then on another creature’s turn it casts a spell and you want cast Shield or Counterspell you absolutely can.
When can you use counterspell DND?
You attempt to interrupt a creature in the process of Casting a Spell. If the creature is Casting a Spell of 3rd Level or lower, its spell fails and has no Effect. If it is Casting a Spell of 4th Level or higher, make an ability check using your Spellcasting Ability.
How can you counterspell while casting another spell?
The wizard responds by flicking his head up, diverting the energy wave and maintaining his focus. His eyes narrow. A fiery ball engulfs the guano and sulfur, burning dense and hot. The wizard combines both hands and pushes, sending the ball hurling toward his opponent.
How many spells can you cast in one turn?
There are no restrictions on how many spells you can cast in a turn if they have casting times of 1 action or a reaction, subject to having unused actions and reactions. (So you could, potentially, use Action Surge to cast 2 fireballs in 1 turn.) If I cast fireball, the enemy wizard casts counterspell, I can use my reaction to counterspell.
Is there a rule against counterspell on your turn?
Counterspell is a reaction spell, there is no rule against taking a reaction on your turn.
Can you cast magic missile and Counterspell at the same time?
However, if you have a feature like action surge that gives you two actions, you can cast two 1 action spells with the 2 actions you get. In the case of the ek, you could cast magic missile, action surge, and cast magic missile again. Never DM for a group of spellcasters with Counterspell who then face enemies who also have Counterspell.
