The Coral Wraith Is A Must Have

There aren't many magic attack cards with the sneak ability. The Earth Splinter's Goblin Sorcerer is one but it is pretty weak as it only does 1 damage. The Coral Wraith is like the Goblin Sorcerer on steroids.

Pairing it with a +1 magic summoner like Alric Stormbringer and you have a 3 magic attack to the enemy's back line. Can be really effective as many opponents pack their back monsters with heavy shields but rarely do you see a void or magic reflect at the back.

Here's a battle where the Coral Wraith made a big difference by targeting the back instead of the front. It managed to pick out the Medusa and Elven Mystic, bypassing the void and magic reflect at the front.

A level 1 Coral Wraith is pretty good already and there is not much need to upgrade it since you can shield it with other monsters in the lineup.