Obsidian Fireheart [Zendikar] Normal Trap You can only use each

You can only use each effect of "Vision Hero Minimum Ray" once per turn

(Quick Effect): You can detach 1 material from this card

When this card is sent from the field to the Graveyard: You can send 3 face-up "Fire Formation" Spell/Trap Cards you control to the Graveyard

If this card has a "Cipher" card as Xyz Material

Choose your fate

Obsidian Fireheart [Zendikar] Normal Trap You can only use eachSet: Zendikar Type: Creature Elemental Rarity: Mythic Cost: {1}{R}{R}{R} {1}{R}{R}: Put a blaze counter on target land without a blaze counter on it. For as long as that land has a blaze counter on it, it has "At the beginning of your upkeep, this land deals 1 damage to you." (The land continues to burn after Obsidian Fireheart has left the battlefield.)