Beam Gun—Make your Power 0 to halve your opponent’s HP.What’s good about it: Beam Gun can turn a lop-sided fight in your favor—giving you a virtual attack that is much higher in situations where you’re behind. It’s very helpful for Crash and Counter attacks since they already have 0 Power. This also has some pretty nasty combos overall. Beam Gun is even better if you can see the opponent wants to Counter, since you’ll dump your Power to 0 while still dealing some damage; so it doesn’t only work while behind. What’s bad about it: Halving isn’t always going to be better than a normal attack, so this card requires specific timing and doesn’t usually work well when you’re already ahead. Shining Mane is better in situations where halving + attacking would score. Tips: Run Beam Gun with Crash Digimon, or high HP Digimon (which tend to have lower Power). Try to save Beam Gun for when your opponent gets up to Mega, since they can’t evolve to recover the HP this removes and can set you up for 2 KO points. Running other Beam-Gun-like effects such as Gazimon and Shining Mane, can really help iteratively bring down massive damage-sponges. Absolutely busted with Knightmon‘s evobonus such that its Power can’t become 0. Speaking of Knightmon (and Stardom), it heals you +500 and opponent somewhat, but that’s cut in half if followed by Beam Gun.
This is also a weirdly excellent counter to Crash, since their HP is halved before they attack you. Beam Gun is like the evil mirror version of Metal Banana, yet is an excellent counter to that bastard of a card—your power is already zero, their HP will now be quartered. This is also an incredibly punishing card if it resolves after Mega Disk, since they’ll have trashed a huge amount for very little. Any “if HP is higher” effects by the opponent will almost certainly be shut off by a first-resolving Beam Gun. Beware of Chainsaw, since it hard-counters Beam Gun to the point of absurdity by making their HP 10 after. Play with Gokumon Activate, for a ridiculously easy KO by halving their HP then reducing it by their Cross.