T:Mode$ DamageDone | CombatDamage$ True | ValidTarget$ You | TriggerZones$ Battlefield | Execute$ TrigPutCounter | OptionalDecider$ You | TriggerDescription$ Whenever you're dealt damage, you may put that many +1/+1 counters on CARDNAME.
T:Mode$ DamageDoneOnce | CombatDamage$ True | Secondary$ True | ValidTarget$ You | TriggerZones$ Battlefield | Execute$ TrigPutCounter | OptionalDecider$ You | TriggerDescription$ Whenever you're dealt damage, you may put that many +1/+1 counters on CARDNAME.
SVar:TrigPutCounter: AB$ PutCounter | Cost$ 0 | Defined$ Self | CounterType$ P1P1 | CounterNum$ X | References$ X
T:Mode$ Phase | Phase$ End of Turn | ValidPlayer$ You | TriggerZones$ Battlefield | Execute$ TrigRemoveCounter | TriggerDescription$ At the beginning of your end step, remove all +1/+1 counters from CARDNAME.
Oracle:Whenever you're dealt damage, you may put that many +1/+1 counters on Blood Hound.\nAt the beginning of your end step, remove all +1/+1 counters from Blood Hound.