Walhalla

Put Walhalla next to your Graveyard.
Whenever a Human would be put into your graveyard from battlefield, put it into Walhalla instead.
You may play a creature card for its own mana
costs from Walhalla. They have haste.
Put it back to Walhalla at the end of your term.
Any effects which would be triggered when a
creature comes into play will be disabled.