Name:Form of the Dinosaur
ManaCost:4 R R
Types:Enchantment
T:Mode$ ChangesZone | Destination$ Battlefield | ValidCard$ Card.Self | Execute$ TrigLife | TriggerDescription$ When CARDNAME enters the battlefield, your life total becomes 15.
SVar:TrigLife:DB$ SetLife | Defined$ You | LifeAmount$ 15
T:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | TriggerZones$ Battlefield | Execute$ TrigDamage | TriggerDescription$ At the beginning of your upkeep, CARDNAME deals 15 damage to target creature an opponent controls and that creature deals damage equal to its power to you.
SVar:TrigDamage:DB$DealDamage | ValidTgts$ Creature.OppCtrl | TgtPrompt$ Select target creature an opponent controls | NumDmg$ 15 | SubAbility$ DBDealDamage
SVar:DBDealDamage:DB$ DealDamage | Defined$ You | DamageSource$ Targeted | NumDmg$ X
SVar:X:Targeted$CardPower 
SVar:Picture:http://www.wizards.com/global/images/magic/general/form_of_the_dinosaur.jpg
Oracle:When Form of the Dinosaur enters the battlefield, your life total becomes 15.\nAt the beginning of your upkeep, Form of the Dinosaur deals 15 damage to target creature an opponent controls and that creature deals damage equal to its power to you.