Royal Assassin [Unlimited Edition] Urza's Legacy you may remove those counters

you may remove those counters and transform it

but it is true that these artifacts can be dangerous

legendaries

They burst through the soil of their own accord

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

Royal Assassin [Unlimited Edition] Urza's Legacy you may remove those countersSet: Unlimited Edition Type: Creature Human Assassin Rarity: Rare Cost: {1}{B}{B} {T}: Destroy target tapped creature. Trained in the arts of stealth, the royal assassins choose their victims carefully, relying on timing and precision rather than brute force.