Rings of Brighthearth [Kaladesh Inventions] Tezzeret and that player can't activate

and that player can't activate abilities that aren't mana abilities

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {4} {2}

among any of the creatures it's being blocked by or is blocking

then reveal a card at random from your hand

and lands you control have indestructible

Rings of Brighthearth [Kaladesh Inventions] Tezzeret and that player can't activateSet: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {3} Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy. Crafted in emulation of dwarven hearth decorations, these devices doubled the output of Amrit Vatyam's forges.