Impact Monster Rules

[Tomuhara]

I received alot of question that retained to Multiple impact calling and found the answer on the "Buddyfight Wikia" which updates pretty frequently when rules change:

An "Impact Monster" cannot be normally called during the player's main phase. Only one impact monster can be normally called per turn, during the player's final phase following the same rules as a monster (this is know as "impact call"). Calling an impact monster also counts as casting an impact following the same rules as an impact.

However, calling an impact monster with effects bypass the restriction of "only one impact monster per turn". The player may call any number of impact monsters by using effects and during any phase.

The player who calls the impact monster also may gain 1 life with buddy gift if that card is his or her buddy and it entered the field successfully.

An impact monster may attack during the attack phase, and also during the final phase as long as it is possible.

Hopefully this answers your questions if not feel free to ask.

[Rapiret]

When you say normally call, that means that I can call an Impact Monster by other means during my Main Phase, like with the Skull Warrior Set cards?

[Tomuhara]

When you say normally call, that means that I can call an Impact Monster by other means during my Main Phase, like with the Skull Warrior Set cards?

However, if an “impact monster” is called by an effect, that call is not included in the count of
“once per turn”. It is also possible to call an “impact monster” normally, and then call an “impact
monster” by an effect. (It is also possible vice versa) (From The Detailed Rule Book)

So Yes they can be called by other means

[Bullboygear]