Meraginasu

Iceblight, Dragonblight
Darkness - White creatures take twice the amount
of combat damage from this creature
Meraginasu can't be blinded, affected by Traps or
affected by Sonic Bombs
Meraginasu will attack once it finds a target using its
hearing, whatever is making the most noise will attract
it and will cause it to 'lock on' to them. Once it has
locked onto its prey, it will attack them relentlessly for
some time.