The Inferno Tower's damage increases over time as it remains focused on a single target.
The Inferno Tower is extremely effective against high hitpoints troops such as Giants, Balloons, Golems, P.E.K.K.A.s, Hog Riders, and Lava Hounds due to its intensified damage over time. If placed correctly the Inferno can counter a Royal Giant push, burning the Royal Giant quickly if not countered with Zap or Freeze.
To effectively counter the Inferno Tower, swarm it with numerous, low Elixir cost units such as Spear Goblins or Skeletons. Due to the fact it can only burn one target at a time, the troops will overpower and outnumber the Inferno Tower and destroy it.
It takes about 6 seconds for the Inferno Tower to reach its full damage capabilities but due to the one-second server delay it is a good idea to launch a Zap on the fourth second of the Inferno damage build up.
Since the Inferno Tower is vulnerable to swarms of units such as the Skeleton Army, prepare or play a card that deals area damage such as the Wizard to protect it from swarms of low hitpoint troops.
However, this can still be countered by high damage spells such as the Rocket or Lightning. If the opponent has such cards, try to draw them out first.
Wizard + P.E.K.K.A. pushes can easily be countered with the Inferno Tower + an area damage card, as the Inferno Tower will quickly take out the P.E.K.K.A and a tanky troop like the Knight should be able to take out any support units after the P.E.K.K.A is gone. Giant Skeletons can distract units and will also deal enough Death Damage to take out any support behind the P.E.K.K.A.
It can act as a Zap bait allowing you to play combos that are devastating if left ignored but can easily be countered, such as Ice Spirit + Goblins.
The Inferno Tower was released with Clash Royale's soft launch on 4/1/16.
On 2/2/16, the February 2016 Update decreased the Inferno Tower's lifetime to 45 sec (from 60 sec) and made it slower to re-target enemies by 50%.
On 19/2/16, a Balance Update decreased the Inferno Tower's hitpoints by 6% and lifetime to 40 sec (from 45 sec).
On 3/5/16, the May 2016 Update fixed the "range bug" and decreased the Inferno Tower's range to 6 (from 6.5) but its effective range is unchanged.
On 4/7/16, the Tournaments Update increased the Inferno Tower's hitpoints by 6%. It also gave Zap and Freeze the ability to reset the damage output.
It resembles the level 1 Inferno Tower in single target mode from Clash of Clans.
In Clash Royale, the Inferno Tower cannot be toggled to alternate modes of fire and only targets 1 enemy at a time, while in Clash of Clans it can be toggled to single target or multi target mode.
The Inferno Tower has the same hitpoints as an equal level Hog Rider.
The Inferno Tower has the highest damage per second of any card in the game when it reaches its fully charged firing stage.
When it is doing mass damage, the waves around its main beam will get thicker and the tip of the tower will catch on fire.
Out of all cards in the game, the hit speed of the Inferno Tower is second only to the X-Bow with a 0.4 second hit speed versus the X-Bow's 0.25.
A stream of thick, black smoke rises from its target.
The damage of the Inferno Tower functions almost the same as the Inferno Dragon. For the first two seconds, it deals 5% damage. For the next two seconds, it burns at roughly 20% damage. After that, it will incinerate the enemy with its full (100%) damage.