Name:Mana Echoes
ManaCost:2 R R
Types:Enchantment
T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Creature | TriggerZones$ Battlefield | TriggerController$ You | OptionalDecider$ You | Execute$ TrigPump | TriggerDescription$ Whenever a creature enters the battlefield, you may add an amount of {C} to your mana pool equal to the number of creatures you control that share a creature type with it.
SVar:TrigPump:AB$ Pump | Cost$ 0 | Defined$ TriggeredCard | RememberObjects$ TriggeredCard | SubAbility$ DBMana
SVar:DBMana:DB$ Mana | Produced$ C | Defined$ You | Amount$ X | References$ X | SubAbility$ DBCleanup
SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
SVar:X:Count$Valid Creature.sharesCreatureTypeWith Remembered+YouCtrl
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/mana_echoes.jpg
Oracle:Whenever a creature enters the battlefield, you may add an amount of {C} to your mana pool equal to the number of creatures you control that share a creature type with it.