RNG sucks, that's what.
It's clearly your favourite line.
On a side note - loosing this deck will probably hurt your vault a lot.
And with reason.
I tested this matchup in trainer: 5 matches with each deck against the AI.
Rav vs. AI 4 - 1
PoldeR vs. AI 2 - 3
I know, 10 matches isn't much, but I intended just to prove that the decks are completely even (at least).
PoldeR's deck has two great weaknesses: 1. Lycans have only 1 hp when they come into play, meaning they will easily die to ice bolt. 2. The deck packs only 3 antimatters against 9 creatures: Rav can bolt his own creatures or he can play crawlers to take down the hp's to one shot kill Polder.