This policy has become especially popular in games or formats where some vital cards are far too expensive, such as the vintage format in Magic: The Gathering
Each of them attacks its owner this turn if able
In other words, shield counters are a high-risk, high-reward mechanic
When your opponent activates a card or effect on the field: You can remove the appropriate number of Poker Counters from this card, based on that cards type (Monster = 3, Spell = 2, Trap = 1)
Once youve won a game of Magic, then it ultimately doesnt matter which cards your opponents had or how many theyve amassed
At the cost of not being able to conduct your Battle Phase, you can Special Summon one level four Monster from your hand