These can be found in Play Boosters and Collector Boosters and are available in both non-foil and traditional foil finishes
Ive seen plenty of games where someone stabilized the board, resolved Avacyn , and forced the table to start digging for exile or sacrifice effects immediately
And if you like reading cross-game strategy to sharpen your instincts, this quick read shows the same lesson in a different format: MTG Foundations Sleeper Is an Underrated Answer to a Problematic Archetype
It also has a Sword and Shield effect from Duel Monsters where, as long as it points to a Monster, your opponents Monsters get their attack and defense stats switched
The One Ring [Best Colorless Card for Protection and Card Advantage] The One Ring does two things when it hits the board
Not only can he reanimate any creature from your graveyard, no strings attached, but hes difficult to remove, too