This spell costs
less to cast, where X is the greatest number of artifacts an opponent controls.
Flying (This creature can't be blocked except by creatures with flying or reach.),
trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.),
haste (This creature can attack, 
and 
as soon as it comes under your control.)
Whenever Cavern-Hoard Dragon deals combat damage to a player, you create a
Treasure token
(A Treasure is an artifact with ", Sacrifice this artifact: Add one mana of any color.") for each artifact that player controls.
Vintage
Modern
