Karn, Silver Golem [Arena League 1999] Moonfolk Monk Counters can't be put on

Counters can't be put on artifacts

instead of declaring blockers

Set: Dragons of Tarkir Promos Type: Creature — Dragon Rarity: Rare Cost: {2}{R}{R} Flying

denying us passage

Set: Unhinged Type: Creature — Monkey Rarity: Common Cost: {3}{G} As Monkey Monkey Monkey enters the battlefield

Karn, Silver Golem [Arena League 1999] Moonfolk Monk Counters can't be put onSet: Arena League 1999 Type: Legendary Artifact Creature Golem Rarity: Rare Cost: {5} Whenever Karn, Silver Golem blocks or becomes blocked, it gets 4 +4 until end of turn. {1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.