Name:Draining Whelk
ManaCost:4 U U
Types:Creature Illusion
PT:1/1
K:Flash
K:Flying
T:Mode$ ChangesZone | ValidCard$ Card.Self | Origin$ Any | Destination$ Battlefield | Execute$ TrigCounter | TriggerDescription$ When CARDNAME enters the battlefield, counter target spell. Put X +1/+1 counters on CARDNAME, where X is that spell's converted mana cost.
SVar:TrigCounter:DB$ Counter | Cost$ 0 | TargetType$ Spell | ValidTgts$ Card | TgtPrompt$ Select target spell | RememberCounteredCMC$ True | SubAbility$ DBPutcounter
SVar:DBPutcounter:DB$ PutCounter | CounterType$ P1P1 | Defined$ Self | CounterNum$ X | References$ X | SubAbility$ DBCleanup
SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
SVar:X:Count$RememberedNumber
SVar:Picture:http://www.wizards.com/global/images/magic/general/draining_whelk.jpg
Oracle:Flash (You may cast this spell any time you could cast an instant.)\nFlying\nWhen Draining Whelk enters the battlefield, counter target spell. Put X +1/+1 counters on Draining Whelk, where X is that spell's converted mana cost.