energy deck mtg commander / EDH decks — border card of rarity Rare or higher and 1 Traditional Foil Uncommon card) Wizards of The Coast -

For example, the ability granted by Widow's Walk won't trigger if you attack with multiple creatures and all but one of them are removed from combat

It also keeps Hydro-Man safe from sorcery-speed removal and board wipes, though it removes it as a blocker, so theres some trade-off for your forbidden blue ramp

I know Id buy a box of New Phyrexia or Lorwyn for aesthetic purposes alone if I had the resources

Reanimate between 1 and 20 total mana value worth of creatures from any graveyard and hope you roll well on a 7 drop is just about silly enough to consider in some graveyard recursion decks

Treachery is such a stupid card