berserk mtg card Collectors Edition Berserk Instant Cast this spell only before the combat damage step Berserk · Masters Edition (ME1)

This card also has a nice activated ability for myr typal decks, but I think it still works well even if you dont plan to use its second ability

Legendary Creature Human Artificer When Urza, Lord High Artificer enters the battlefield, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control." Tap an untapped artifact you control: Add

I dont think the token youre going to give your opponent matters all that much

This set gives us the return of the partner keyword

The first tosses +1/+1 counters on all Cats you control (sweet), and the second produces a 2/1 Cat Warrior token and then deals damage to any target equal to the number of creatures you control