Clockwork Dragon [Mirrodin] Resale Promos you may put a permanent

you may put a permanent card with equal or lesser converted mana cost from your hand onto the battlefield

but he gleaned the rudiments of lithomancy from Nahiri

Set: The Lost Caverns of Ixalan Promos Type: Creature — Merfolk Scout Rarity: Uncommon Cost: {G} When Cenote Scout enters the battlefield

Set: Stronghold Type: Enchantment Rarity: Uncommon Cost: {2}{B} Whenever an opponent discards a card

and they gain "{T}: Add one mana of any color

Clockwork Dragon [Mirrodin] Resale Promos you may put a permanentSet: Mirrodin Type: Artifact Creature Dragon Rarity: Rare Cost: {7} Flying Clockwork Dragon enters the battlefield with six +1 +1 counters on it. Whenever Clockwork Dragon attacks or blocks, remove a +1 +1 counter from it at end of combat. {3}: Put a +1 +1 counter on Clockwork Dragon.