Wall of Glare

Defender (This creature can't attack.)
Wall of Glare can block any number of creatures.

Palace Guard

Palace Guard can block any number of creatures.

Guardian of the Gateless

Flying
Guardian of the Gateless can block any number of creatures.
Whenever Guardian of the Gateless blocks, it gets +1/+1 until end of turn for each creature it's blocking.

Dueling Grounds

No more than one creature can attack each combat.
No more than one creature can block each combat.

Valor Made Real

Target creature can block any number of creatures this turn.

Blaze of Glory

Cast this spell only during combat before blockers are declared.
Target creature defending player controls can block any number of creatures this turn. It blocks each attacking creature this turn if able.

Jared Carthalion, True Heir

When Jared Carthalion, True Heir enters, target opponent becomes the monarch. You can't become the monarch this turn.
If damage would be dealt to Jared Carthalion while you're the monarch, prevent that damage and put that many +1/+1 counters on it.

Give No Ground

Target creature gets +2/+6 until end of turn and can block any number of creatures this turn.

Entangler

Enchant creature
Enchanted creature can block any number of creatures.

Ironfist Crusher

Ironfist Crusher can block any number of creatures.
Morph {3}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)