Colossal Squig: Fungoid Squig Explosion

[sorokyl]

This ability reads:
"...before removing this model from play, roll a dice for each enemy unit within 3". On a 2+, that unit suffers D3 mortal wounds. Then you can add 1 unit of up to 5 Cave Squigs to your army..."
Is the adding of cave squigs to your army conditional on there having been any models within 3" (or taking damage from this ability)?  To me it seemed obvious that I got to add the unit regardless, but my opponent disagreed. 

[XReN]

The rule is just an order in which you do those things, otherwise it's two completely separate actions that don't rely on each other.

[The_Dudemeister]

Here's what a conditional ability would've been phrased like from the example of the Magister's spell "Bolt of Change"

Quote

... That unit suffers D3 mortal wounds. If any models were slain by this spell, before removing the first slain model, you can add 1 Tzeentch Chaos Spawn to your army and set it up within 3" of the slain model’s unit.