If you take your mobile phone and get your torch and shine it on the card, so as you shine it on the card, because it doesn't have that inner layer, it passes through really easily
Four mana makes it one of the more expensive rummage effects, but two cards and two Treasure tokens are too good to pass up
It can make defense harder for the cursed player or allow someone to cast two spells in a turn, but these best-case-scenarios should not be worth a card in your deck
If Gobland gains flash, or you have the ability to play Gobland as though it had flash (due to Teferi, Druid of Argoth, for example), you can ignore the normal timing rules for when during your turn you can play a land, but not any other restrictions
Youre casting cards from the top of your library, and suddenly you cant because its a land or a very expensive spell