Overwhelming Stampede
Sorcery
Until end of turn, creatures you control gain trample and get +X/+X, where X is the greatest power among creatures you control.
They do not fear the Ringwraiths, for those who have dwelt in the Blessed Realm live at once in both worlds, and against both the Seen and the Unseen they have great power.
Viko Menezes
Rulings
You check the power of your creatures as Overwhelming Stampede resolves. For example, if you control a 2/1 creature, a 2/2 creature, a 2/4 creature, a 4/1 creature, a 5/5 creature, and a 5/6 creature at that time, each of your creatures gets +5/+5 and gains trample until end of turn.
(wotc • 2010-08-15)
Rulings
You check the power of your creatures as Overwhelming Stampede resolves. For example, if you control a 2/1 creature, a 2/2 creature, a 2/4 creature, a 4/1 creature, a 5/5 creature, and a 5/6 creature at that time, each of your creatures gets +5/+5 and gains trample until end of turn.
(wotc • 2010-08-15)