In Hindi, it is written as त्रिशूल and is pronounced without the a.
Trishula means "three spears", which referring to this monster's appearance and effect.
The three heads of this monster likely correspond to its ability to banish a card from three different places.
Following the evolution of each "Dragon of the Ice Barrier", this monster has 200 more ATK and 300 more DEF than the previous dragon. However, it also has 2 more Levels than the previous dragon, instead of 1 as was the case for the first dragon.