Iskenderun's Battlesphere

Version 0.30: This article may not be up to date for the latest stable release of Crawl.

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Iskenderun's Battlesphere
Level	5
School1	Conjuration
Source(s)	Book of Power
Casting noise	4
Spell noise	0

Conjures a small globe of magical energy. Each time its creator casts a destructive spell (other than Battlesphere itself or Spellforged Servitor), the battlesphere will launch its own volley of energy at a random foe. With increasing power, the battlesphere lasts longer and deals more damage per volley.

Iskenderun's Battlesphere is a level 5 Conjurations spell which conjures a friendly battlesphere to support your magical attacks.

Useful Info

Each time you cast a destructive spell, the battlesphere will shoot a perfectly accurate, irresistible beam. It is aimed at a random target within its line of fire. The battlesphere cannot fire through you. However, you can fire through the battlesphere.

Damage formula: 2d(6 + Power/11)
Number of charges: 4 + (1d(Power + 10)-1)/10
Max. spellpower: 100

Battlespheres have a limited amount of charges. It will dissipate if: it runs out of charges, if you enter a different floor, or if it times out. In addition, battlespheres can be targeted and destroyed by enemy attacks.

You may only summon one battlesphere at a time. Casting it while one already exists will recall it to your location and increase both its duration and number of charges (max 20).

"Destructive spells" are spells that Vehumet supports. For a full list of eligible spells, see destructive spell. The only destructive spells that battlespheres won't support are Iskenderun's Battlesphere (obviously) and Spellforged Servitor. You can also view the list of eligible spells by looking at this spell's description.

The unrand sphere of Battle will create a battlesphere every time monsters are in sight.

Strategy

Iskenderun's Battlesphere works very well together with Magic Dart. The dart never misses, only costs 1 MP, has your entire line of sight as range - and if the Battlesphere has a free path to shoot at your enemy, it will do so, significantly boosting the damage output of Magic Dart.

It doesn't block your line of fire. It does block the line of fire for monsters, though! While not perfectly reliable, with good pathing and a bit of luck, you can keep your sphere between yourself and a nasty hexer / banisher / malmutator. While being able to blast them to your heart's content with the battlesphere supporting your damage output. Or while you run towards the stairs.

If your sphere does not fire, check for a clear firing path from its position. Your sphere is an ally, so the 't' menu can be used to order it around. tf (tell to follow) brings it back to you, should it have drifted into the wrong corner of the screen.

This combination is very stealthy because both the dart and the sphere are pretty silent in what they do. While it will still wake up sleeping enemies, it will draw far less attention than a Fireball or Plasma Beam does.

Monster Version

Battlespheres created by monsters function identically to your own. The following enemies cast Iskenderun's Battlesphere:

• Q Tengu conjurer

History

• Prior to 0.30, battlespheres would only trigger with Conjurations spells.
• Prior to 0.26, Iskenderun's Battlesphere was a Conjurations / Charms spell. It was aimed at the target you fired, rather than a random target. It didn't work with non-targetable Conjurations (like Static Discharge). However, it would trigger with certain non-Conjurations spells.
• Prior to 0.20, this spell could be found in the book of Conjurations instead of the book of Power.
• In 0.18, The battlesphere supports mephitic cloud, and probably more spells also.
• Prior to 0.14, this was a level 4 spell.
• Iskenderun's Battlesphere was added in 0.12.