Zhang Liao, Hero of Hefei [Portal Three Kingdoms] Cat Beast Spirit Set: Beta Edition Type: Enchantment

Set: Beta Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{U} Enchant enchantment

you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less

Whenever a creature you control deals combat damage to a player

Whenever a Mountain is tapped for mana

Then that player loses all unspent mana and you add the mana lost this way

Zhang Liao, Hero of Hefei [Portal Three Kingdoms] Cat Beast Spirit Set: Beta Edition Type: EnchantmentSet: Portal Three Kingdoms Type: Legendary Creature Human Soldier Rarity: Rare Cost: {4}{B}{B} Whenever Zhang Liao, Hero of Hefei deals damage to an opponent, that opponent discards a card.