Training Grounds
Rise of the Eldrazi (ROE #91)
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CHCardhoarder
Normal
Training Grounds
CMC: 1
Type
Enchantment
Rules Text
Activated abilities of creatures you control cost 
less to activate. This effect can't reduce the mana in that cost to less than one mana.
Printing
Rise of the Eldrazi (ROE #91)
rare
Illustrated by James Ryman