Name:Ravenous Vampire
ManaCost:3 B B
Types:Creature Vampire
PT:3/3
K:Flying
T:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ You | Execute$ TrigSacrifice | TriggerZones$ Battlefield | TriggerDescription$ At the beginning of your upkeep, you may sacrifice a nonartifact creature. If you do, put a +1/+1 counter on CARDNAME. If you don't, tap CARDNAME.
SVar:TrigSacrifice:AB$ Sacrifice | Cost$ 0 | Optional$ True | SacValid$ Creature.nonArtifact | Amount$ 1 | RememberSacrificed$ True | SubAbility$ DBPutCounter
SVar:DBPutCounter:DB$ PutCounter | CounterType$ P1P1 | CounterNum$ 1 | ConditionDefined$ Remembered | ConditionPresent$ Creature.nonArtifact | ConditionCompare$ GE1 | SubAbility$ DBTap
SVar:DBTap:DB$ Tap | Defined$ Self | ConditionDefined$ Remembered | ConditionPresent$ Creature.nonArtifact | ConditionCompare$ EQ0 | SubAbility$ DBCleanup
SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/ravenous_vampire.jpg
Oracle:Flying\nAt the beginning of your upkeep, you may sacrifice a nonartifact creature. If you do, put a +1/+1 counter on Ravenous Vampire. If you don't, tap Ravenous Vampire.