Like most Pokmon cards, the value of Mew V depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Fusion Strike)
Some remaining demo packs were given at the E3 (Electronic Entertainment Expo) event on May 13-15, 1999 (source)
The problem is that the evolving metagame of security is not static attackers modify their approach on a never-ending, daily, weekly, and monthly basis
To have the effect of non-targeting equip any Monster on the opponent's field is CRAZY, as it bypasses most protection AND doesn't trigger any effects when the Monster has left its position
Obviously, it's more than getting lands
Its plan is simple: win the game as quickly as possible by reducing the opponents life total to 0