Mana Echoes [Double Masters] DP07 Set: Beta Edition Type: Instant

Set: Beta Edition Type: Instant Rarity: Common Cost: {1}{R} Destroy target artifact

Set: Arabian Nights Type: Creature — Jackal Rarity: Common Cost: {R} {T}: Target creature can't be regenerated this turn

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

Sacrifice those creatures at the beginning of the next end step

Even bigger

Mana Echoes [Double Masters] DP07 Set: Beta Edition Type: InstantSet: 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.