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It's a little disappointing. It requires two specifically built decks cooperating with specific starting hands. The tape represented by creatures with their power (or toughness) representing distance from the read head (with 2 being the start position in this case), their color specifies the direction the read head moves, and their type represents symbols recorded on the tape. You copy a creature that creates zombie tokens when other creatures dies 18 times, change the text for creature type and color on all of them. Using a spell to give everything -2/-2 for a turn causes the tape to be read. Using a spell to distribute +1/+1 counters and -1/-1 counters moves the read head. The different states are created by giving some of your token generators phasing which changes the state at the beginning of each turn and determines the program. So it's slow, can't handle interference, and requires two decks with perfect hands working together.