Collectible Card Game Headquarters

Describe the Bug:
Gravepurge make draw card at next opponent upkeep

Which card did behave improperly ?
Gravepurge

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink 2015/12/25: Battle For Zendikar,duel

What exactly should be the correct behavior/interaction ?
Gravepurge make draw card immediately upon resolution

Are any other cards possibly affected by this bug ?
-

It was a slowtrip, just like Bone Harvest. Fixed in cdbe649. Not taking responsibility for the other major problem with (now both) cards, that they don't select until resolution and don't target at all.

Redone in a more exact way in b9e89a2

2 problems that apply to both cards (Gravepurge and Bone Harvest).

1) can't target less than max number of creatures in your graveyard (spell returns to hand if you try).

2) When it resolves it puts copies of the chosen cards on top of your library, but leaves the targeted cards in our graveyard.

Fixed both in 0a5c053

The prompt is double wrong "Select a creatures card." instead of something like "Select target creature cards.".

Fixed prompt in commit 115dd23. Others seem already fixed.