Boulder Probe Staff

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Boulder Probe Staff
  • Boulder Probe Staff item sprite
Stack digit 1.png
Damage22 (Summon)
Knockback3 (Very Weak)
Use time32 (Slow)
TooltipSummons a floating mass of granite energy that continually zaps your cursor's position
Right click to desummon the probe early
Inflicts DebuffGranite Surge.pngGranite Surge
Debuff duration3 seconds
Debuff tooltipToo much energy is causing damage and lowered defense
RarityRarity Level: 3
Sell5000*50 Silver Coin.png
Research1 required
Dropped by
Entity Quantity Rate
Granite Energy Storm 1 20%
Treasure Bag(Granite Energy Storm) 1 20%
Summons Sentry
Granite Boulder Probe
Granite Boulder Probe.png

The Boulder Probe Staff is a sentry summon weapon that is dropped by the Granite Energy Storm. It spawns a stationary Granite Boulder Probe that zaps enemies with an instantaneous beam that pierces infinitely and inflicts the Granite Surge debuff, dealing additional damage and lowering defense. However, it is unique from most minions, as it does not automatically target enemies; rather, it shoots in the direction of the summoner's cursor. It will fire once every 1.25 seconds for 2 minutes before disappearing, but can also be desummoned manually by right-clicking the staff. Summoned boulder probes are invincible.

Its best modifier is Ruthless. The Mythical modifier provides the widest array of stats bonuses, but these primarily affect the initial summon rather than the resulting minion. Additionally, Minions cannot deal critical hits. The only significant advantage a Mythical Boulder Probe Staff has over a Ruthless one is knockback.


    • Buffed damage from 20 to 22, mana cost from 20 to 15, firing speed from 1/sec to 1.25/sec, and duration from 30 seconds to 2 minutes.
    • Sentry sprite updated.
  • Increased damage from 18 to 20 and mana cost from 15 to 20.
  • Decreased damage from 24 to 18 and mana cost from 20 to 15.
  • Introduced.