This is Price of Progress, a card that punishes everyone at the table who is using too many powerful nonbasic lands
World War Hulk decks can become a problem, although its hard to align your saga with your hand
When you do, target creature an opponent controls gets -X/-X until end of turn, where X is the greatest mana value among cards in your graveyard
$50* List Another $25 added to the budget nabs us Skullclamp for unbeatable card draw, superior Go Tall options such as Mortivore and Sewer Nemesis, card advantage + mill with Hermit Druid, and the 1cmc planeswalker known as Deathrite Shaman
8 Skystrike Officer Overwhelms The Battlefield Creatures that generate tokens are always efficient spells
You put, into play, d20 mana value creatures from all graveyards to your battlefield