Mana Echoes [Double Masters] DP07 that player loses 1 life

that player loses 1 life and discards a card

return any number of target creature cards with total power 10 or less from your graveyard to the battlefield

Inventors Type: Legendary Creature — Elf Warrior Rarity: Mythic Cost: {1}{G}{G} {G}: Regenerate another target Elf

the number you should have is four

Even bigger

Mana Echoes [Double Masters] DP07 that player loses 1 lifeSet: Double Masters Type: Enchantment Rarity: Mythic Cost: {2}{R}{R} Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it. When the ground is saturated with mana, even the lightest footstep can bring it to the surface.