This is visible when hovering over the portrait of the spell at the start of the battle when fighting as Amarians or against them (it is adviced to click the portrait of a unit first to make the battle pause).

Expected result: Values of 0 when the player does not control any shards like I did in this particular game.

This may be a spelling error that only appears when you control no shards.

At this point I had 2 Air Shards and 1 Life Shard, nothing more.

The 2 Air gave me the +2 Dodge, but my 0 Fire, Water, Earth Shards caused these abnormal values.

At least that's my guess.

During battle everything was normal and I did not recieve those 600 million Initiative or anything else. I recieved nothing. Which is the intended behaviour.

BUT the description of this spell should be updated to work as the behaviour.