Hey there, im trying to break into modern this summer as im going to GP copenhagen. So for this event i've put together an affinity deck. The mainboard is basically done. But i've got no idea what i should be having for sideboard. I've looked at other sucsessful lists in the past and took some from that, but i've only arrived at this so far:
3x ancient grudge
2x Spellskite(considering putting these into mainboard)
1x Etched champion
1x Grafdigger's Cage
2x Thoughtseize
Other than this i am at complete blank. I would like just some small help to get me on my way as i am new to the format.