Talk:Halloween Update/@comment-34378272-20181201191726/@comment-35283005-20181201232137

@SunnyTomato it has nothing to do with dedicated engine boxes, but rather this is a classic golden rule that everyone must keep in mind; "always keep a certain number of a specific card that you need the most".

Remember if you don't have a specific card or have less than 3 of that card, the drop rate of that card decreases by a certain factor. This is the reason why V8 engine is very rare for many players.

I should point out that this is based on personal observations.