Name:Bloodsworn Squire
ManaCost:3 B
Types:Creature Vampire Soldier
PT:3/3
A:AB$ Pump | Cost$ 1 B Discard<1/Card> | Defined$ Self | KW$ Indestructible | SubAbility$ DBTap | SpellDescription$ CARDNAME gains indestructible until end of turn.
SVar:DBTap:DB$ Tap | Defined$ Self | SubAbility$ DBTransform | StackDescription$ SpellDescription | SpellDescription$ Tap it.
SVar:DBTransform:DB$ SetState | Defined$ Self | Mode$ Transform | ConditionPresent$ Creature.YouOwn | ConditionCompare$ GE4 | ConditionZone$ Graveyard | StackDescription$ SpellDescription | SpellDescription$ Then if there are four or more creature cards in your graveyard, transform CARDNAME.
SVar:AIPreference:DiscardCost$Creature
DeckHas:Ability$Discard
DeckHints:Ability$Graveyard
AlternateMode:DoubleFaced
Oracle:{1}{B}, Discard a card: Bloodsworn Squire gains indestructible until end of turn. Tap it. Then if there are four or more creature cards in your graveyard, transform Bloodsworn Squire. (Damage and effects that say "destroy" don't destroy it.)

ALTERNATE

Name:Bloodsworn Knight
ManaCost:no cost
Colors:black
Types:Creature Vampire Knight
PT:*/*
S:Mode$ Continuous | Affected$ Card.Self | CharacteristicDefining$ True | SetPower$ X | SetToughness$ X | Description$ CARDNAME's power and toughness are each equal to the number of creature cards in your graveyard.
SVar:X:Count$TypeInYourYard.Creature
A:AB$ Pump | Cost$ 1 B Discard<1/Card> | Defined$ Self | KW$ Indestructible | SubAbility$ DBTap | SpellDescription$ CARDNAME gains indestructible until end of turn.
SVar:DBTap:DB$ Tap | Defined$ Self | StackDescription$ SpellDescription | SpellDescription$ Tap it.
SVar:AIPreference:DiscardCost$Creature
Oracle:Bloodsworn Knight's power and toughness are each equal to the number of creature cards in your graveyard.\n{1}{B}, Discard a card: Bloodsworn Knight gains indestructible until end of turn. Tap it. (Damage and effects that say "destroy" don't destroy it.)
