Reva (Boss)

Description
Reva features defensive and shield-based patterns more prominently than other bosses. In addition to carrying like her playable counterpart, she also uses attacks resembling the function of  and.

When spared, Reva will appear once when the player is about to be killed, absorbing the killing blow and giving 4 stacks of 100 health to the player, totaling 400 health.

Strategy
While Reva doesn't have a lot of attacks, special caution should be exercised when fighting her, since most of them can deal large amounts of damage to the player if they're not careful, especially at higher tiers; despite this, they can all be countered or mitigated in some way with the right artifacts or spells, making the fight easier.
 * Using or  can remove Reva's shield before she can throw it, making the attack much less threatening. A well-timed  is also very effective, since it will fire the shot right back at her, dealing large amounts of damage, while  her before she throws the shield makes it easy to dodge the attack.
 * Her magenta beam attack can hit the player several times in a short period, but each hit deals relatively low damage, meaning the attack can be mitigated with, and, to a lesser degree, other armor-increasing artifacts like.
 * This also works to an extent against her shield slam, since at high tiers she fires magenta beams alongside the attack.
 * Since her reflecting shield can only reflect 6 hits, spells or weapons that hit quickly can easily tear it down; Saffron's Field Bracer is particularly effective. Reva will always go to where the red shots are landing, even if her reflecting shield has already been destroyed, meaning if the player is fast enough she can be damaged by her own shots.
 * Because the Slashers she summons don't move from the back column, can take them all out with ease, while  the top-right tiles in her grid prevents them from spawning outright, completely nullifying the attack.

Patterns

 * (From tier 2 and above) Gains shield with every step taken; the amount of shield gained per step increases depending on her tier (1 shield for tier 2, 2 shield for tier 3, and 3 shield for tier 4).


 * Gains a large amount of, walking up and down for a short time before throwing it leftwards; it does damage equal to the amount of shield Reva had left as she threw it. The shield's hitbox occupies the the tile above and below (up to 3 tiles in total) during the attack and after being thrown. The amount of shield gained increases depending on her tier (200 shield for tier 1, 250 shield for tier 2, 300 shield for tier 3, and 350 shield for tier 4)
 * Launches a series of magenta beams that bounce around the grid, with several different possible patterns. The speed and amount of these beams increase depending on her tier and whether she is low on health or not.
 * Launches a series of magenta beams that bounce around the grid, with several different possible patterns. The speed and amount of these beams increase depending on her tier and whether she is low on health or not.
 * Launches a series of magenta beams that bounce around the grid, with several different possible patterns. The speed and amount of these beams increase depending on her tier and whether she is low on health or not.
 * Launches a series of magenta beams that bounce around the grid, with several different possible patterns. The speed and amount of these beams increase depending on her tier and whether she is low on health or not.
 * Launches a series of magenta beams that bounce around the grid, with several different possible patterns. The speed and amount of these beams increase depending on her tier and whether she is low on health or not.


 * Slams the ground with her shield, creating a shockwave that spans an entire column of the grid at once, quickly traveling leftwards. From tier 3 and above, she also pulls the player character to the right side of their grid before attacking, and there is an additional shockwave a short delay after the first one. At tier 4 and above, she also attacks with a purple beam that travels horizontally, bouncing around the left and right sides of the grid, similarly to how her purple beam attack behaves. At tier 5 and above, an additional purple beam is added, traveling diagonally.


 * Temporarily raises a magenta shield which reflects up to 6 attacks should she be hit while the shield is raised, spawning waves that travel leftward with a 3 tile tall hitbox, dealing damage equal to the original attack's damage. While the shield is raised, Reva also fires 3 red shots in the air, which will land somewhere in her side of the grid, as she quickly travels to where they land to deflect them, dealing 50 damage.


 * (From tier 3 and above) spawns one or more Slashers in the rightmost column of her side of the grid, attacking the player like usual. Their health, Tier and amount spawned increases depending on her tier. (100 health and 1 spawned at Tier 3, 130 health and 2 spawned at Tier 4; 5lashers become 6lashers at Tier 5+)