Whenever one or more land cards are put into your graveyard from anywhere, draw a card
I am shocked these realms went unused, but I guess a lot of the creative process is knowing when to let your favorite ideas go
The result is that Lumbering Battlement will exile Restoration Angel, and then the ability still on the stack from Restoration Angel will resolve, exiling the Lumbering Battlement
It is not until the late game that the extra punch of the card really pushes through
Equipments have activated abilities, and when you equip a Bonesplitter to a creature you control, its an activated ability that goes on the stack , and they can even respond by killing the creature you would equip
$4 is a pretty inconvenient price point because if its too low, there isnt much money to be made even if you recognize that