The ultralisk remains the heavy assault beast for zerg forces. The ultralisk may now burrow, although it takes longer to burrow than smaller zerg units.
Ultralisks are fast and deal high damage to armored units (Wings of Liberty only). They also deal splash damage which makes them effective against groups of low HP units, such as zerglings and zealots. They are vulnerable to immortals, siege tanks, and dark templar. They are immune to stun and mind control effects.
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