With one of those out, Magica is all of a sudden questing for seven lore each turn which is already a pretty intense addition
The opportunity cost is also low, since it usually replaces a basic land
Dare I say
By putting Memory Energy on Stoutland, you can use Lillipups Pickup attack to recur an Item, which is usually Devolution Spray

Asphodel Wanderer Augur of Skulls Barrier of Bones Bladewing, Deathless Tyrant Bone Dragon Carnage Gladiator Carrionette Champion of Stray Souls Charred Graverobber Cinderbones Clattering Augur Clattering Skeletons Cult Conscript Death Tyrant Deathless Knight Demilich Dimir House Guard Dread Osseosaur Drudge Reavers Drudge Sentinel Drudge Skeletons Duty-Bound Dead Emperor of Bones Flameskull Flayed Nim Fleshless Gladiator Forsaken Miner Ghastly Death Tyrant Golgari Grave-Troll Grim Roustabout Gutless Plunderer Gutterbones Hunted Bonebrute Kathari Remnant Kjeldoran Dead Lightning Skelemental Lim-Dl's High Guard Manor Skeleton Marang River Skeleton Marrow Bats Mortus Strider Moseo, Vein's New Dean Moss-Pit Skeleton Mournwillow Ozox, the Clattering King Paragon of Open Graves Persistent Specimen Phyrexian Monitor Rakdos Ringleader Reassembling Skeleton Restless Bones Restless Dead Rimebound Dead Rot Farm Skeleton Sanitarium Skeleton Scrabbling Skullcrab Sentry of the Underworld Skeletal Crocodile Skeletal Kathari Skeletal Snake Skeletal Vampire Skeletal Wurm Skeleton Archer Skeleton Crew Skeleton Scavengers Skeleton Ship Skithiryx, the Blight Dragon Skithiryx, the Blight Dragon Skullsnap Nuisance Teacher's Pest Tenacious Dead The Grim Captain

You can return a creature from your graveyard to your hand, make someone discard a card, destroy an artifact or deal two damage to something