Rage

Description
Launches 5 fireballs that targets the player's aim marker in cross pattern with a very slight delay after every shot. Each shot deals 30 damage by base, increasing by another 30 for every tile currently at the moment of contacting the target. The order of fireballs in order of time taken to travel to its destination (from fastest to slowest) is Top-Right-Middle-Down-Left. The maximum damage that each shot can deal (ignoring other damage modifiers such as ) is 990 damage, when the entire field is lit on fire.

Strategy and Synergy
Rage is powerful in Flame-heavy decks. Generally, the player would prefer a singular spell that creates lots of Flames at once like or  to maximize Rage's damage by avoiding burning out Flame's timer before being able to cast it. Sustained Flame generation from is also good to have in a Rage build, since it ensures that Rage will always deal a significant amount of damage for its  of 2. Smaller Flame spells are not as effective in decks that have Rage since the Flame may burn out before the player is even able to cycle through them fast enough to cast Rage when there is the most Flame tiles on the field. Spells that allow Flames to be refreshed, such as and especially  which also generates lots of Flames at once, are great for Rage because it allows the player to keep the tiles on fire for as long as possible so that they can generate more flames elsewhere before casting Rage for maximum damage potential.

An easy and quick, albeit risky, method to generate lots of Flames at once with little effort is on the second or third row into Brushfire. This combo would only easily trigger Flame artifacts multiple times, but would also instantly bump Rage's damage to minimum 750 for each shot.

One major but often overlooked downside to this spell is its very long travel time in comparison to other projectile-based spells. This leads to many instances of the enemy being able to quickly dodge the highly damaging fireballs before they are even able to reach their target. A way to mitigate this is to either keep a close eye on enemies' movement patterns or to use -based spells to make sure that the shot will land after after the arduous setup necessary to maximize Rage's damage. The player may also want to target enemies right on their aim marker (as most enemies typically move in cardinal directions which would lead them to yet another fireball), or one below the aim marker (as the top fireball travels the fastest). Also worth mentioning is since the spell's damage is based on the amount of tiles currently on fire at the moment of hit instead of at cast, the long travel time may cause some Flames to burn out before it reaches its target and thus deal less damage than expected.

The best upgrade for Rage is, since it will effectively double the damage increase from every tile on fire which is this spell's main attraction.