Training Grounds (Showcase) [March of the Machine: The Aftermath] Human Peasant You may cast those cards

You may cast those cards without paying their mana costs

Set: Collectors' Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step

Set: Secret Lair Drop Series Type: Legendary Creature — Sliver Rarity: Mythic Cost: {W}{U}{B}{R}{G} All Sliver creatures get +1/+1 for each other Sliver on the battlefield

but a great warrior

Training Grounds (Showcase) [March of the Machine: The Aftermath] Human Peasant You may cast those cardsSet: March of the Machine: The Aftermath Type: Enchantment Rarity: Rare Cost: {U} Activated abilities of creatures you control cost 2 less to activate. This effect can't reduce the mana in that cost to less than one mana.