X is its converted mana cost. An enchantment card with the effect, you can see that the effect is discriminatory
Usually, when you attack during your turn, you turn the attacking card or cards 90 degrees to indicate that theyve attacked and used their turn, so to speak
Theres usually a group of hardcore collectors waiting outside, ready to snag their favorites first
However, the very concept of poison counters was quite innovative, and it would become a major part of multiple formats many years later, with the introduction of the Infect mechanic
Several turns pass and I have everything I need but am waiting for the right moment
2024-03-08 If a player or permanent has more than one kind of counter on it, and you choose for it to get additional counters, it must get one of each kind of counter it already has