Training Grounds
Secret Lair Drop (SLD #2619)
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CKCard Kingdom
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$6.49
Foil
$7.99
CMCardmarket
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€3.90
Foil
€1.66
MPMana Pool
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$4.64
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$4.63
TCTCGplayer
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$6.00
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$5.59
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
Secret Lair Drop (SLD #2619)
rare
Illustrated by Dan Hipp
inverted