Big Spider and Mutated Pig Cards

As a further question, for curiosity's sake, what is the drop rate multiplier on the "small amount" cards, e.g. Mixed Golem? Lastly, how about the continent or region specific (e.g. Strange Pig, Freezer) drop rate multipliers, are they small too, it isn't specifically stated.

The region specific buffs are actually decent. Birk says "small speed and jump" but it adds at least +8 to both, maybe more. And it's only common rank.