AMT token is an anti mining token, it competes with cpu mining on EOS chain buy encouraging you to stake your EOS into REX. Every second 18 AMT are minted to an airdrop pool and 2 AMT are given to the EIDOS team. You can get your share of the mining pool by sending any EOS to airdroptorex and you will get AMT received = (pool) x (your rex) / (total rex). You will also instantly get your EOS back. You can only claim after 24 hours you last claimed.