Summon

Three questions for the mechanic

• Is the signal specific?

  Reveal arrival points, count, and helper type before they become dangerous.

• Is the response reachable?

  Set a strict active limit and test whether every target remains readable.

• Is the opening useful?

  Decide whether the call exposes the boss or rewards clearing helpers first.

Design mistakes

• Hidden rule

  If the signal does not reveal the arrival points and active limit, the hit feels arbitrary.

• Wrong scale

  If timing is tested only at one upgrade level, the pattern can become trivial or unavoidable.

Tune the attack

• Match visuals and collision

  The visible threat must match the active hitbox in space and time.

• Start with ordinary abilities

  Keep one response available with abilities the player already has.

• Retest upgrades

  Check movement, range, damage, and invulnerability against every phase.

Arena

• Make the arena support the rule

  Give each arrival point room and keep helpers from spawning on the player.

Player upgrades

• Respect player upgrades

  Test the strongest available build. If an attack is blocked, make the immunity clear and preserve another useful response.

Do not confuse this with

• Name the exact pattern

  A summon adds actors with their own behavior. A projectile or hazard has no independent role.