Creatures you control are Slivers in addition to their other creature types.
Rath's evincars used hivestones to control the slivers, but the overlay put their power into unwitting hands. Now the stones make not masters, but slaves.
When this artifact enters, surveil 1. {3}{W}, {T}, Exile two creature cards from your graveyard, Sacrifice this artifact: An opponent chooses one of the exiled cards. You put that card on the bottom of your library and return the other to the battlefield tapped. You become the monarch.
When Fires of Mount Doom enters, it deals 2 damage to target creature an opponent controls. Destroy all Equipment attached to that creature. {2}{R}: Exile the top card of your library. You may play that card this turn. When you play a card this way, Fires of Mount Doom deals 2 damage to each player.
The Lord of the Rings: Tales of Middle-earth
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Farideh's Fireball deals 5 damage to target creature or planeswalker. Roll a d20. 1—9 | Farideh's Fireball deals 2 damage to each player. 10—20 | Farideh's Fireball deals 2 damage to each opponent.
Choose two — • Return target creature card with mana value 2 or less from your graveyard to the battlefield. • You gain 4 life. • Counter target creature spell. • Draw a card.
Vigilance Whenever one or more +1/+1 counters are put on this creature, put a +1/+1 counter on each other creature you control. This ability triggers only once each turn.
They communicate via the universal language of treats.