In comparison, a serialized copy of Grimgrin, Corpse-Born from March of the Machine is worth a paltry $140
Some of the chase cards beyond that are Okidogi ex, Fezandipiti ex, and Cassiopeia, all of which will make great additions to a collection should they get pulled
Then Wizards dropped the best planeswalkers in MTG had ever seen onto the battlefield in 2007, and everyone collectively went, Wait so who am I now? Suddenly, dragons, mind mages, and a suspicious number of shirtless heroes were doing my job for me
If you encounter blue core or black core paper fakes the regular tests - bend test and water test - won't do much good since these fakes will just pass the test (unless you really try hard damaging the fake card which when damaged will show the difference, but if done with care the fakes will pass these tests)
Remember, you can also do it defensively to protect your creatures from removal as well
Draft with your friends and build your deck straight out of the pack