Mark of the Oni [Betrayers of Kamigawa] Human Spellshaper and your opponent's LP is

and your opponent's LP is at least 3000 higher than yours: You can make this card gain 3000 ATK

You can only use this effect of "Astral Kuriboh" once per turn

Set: Fifth Dawn Type: Instant Rarity: Uncommon Cost: {2}{W} Destroy target blocking creature

During each of your End Phase: Send the top 3 cards of your Deck to the Graveyard

Mark of the Oni [Betrayers of Kamigawa] Human Spellshaper and your opponent's LP isSet: Betrayers of Kamigawa Type: Enchantment Aura Rarity: Uncommon Cost: {2}{B} Enchant creature You control enchanted creature. At the beginning of the end step, if you control no Demons, sacrifice Mark of the Oni. "As more oni walked Kamigawa, more darkness infested its inhabitants' souls." *The History of Kamigawa*