All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)
"That which would be a fatal mutation in any other species is merely a source of new powers. I am intrigued, yet too fearful to examine it more closely."
—Rukarumel, field journal
Flash (You may cast this spell any time you could cast an instant.)
When Viashino Bladescout enters the battlefield, target creature gains first strike until end of turn.
"Find your courage in a desperate moment, and you turn the tide of history. So sayeth the bey."
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Warbreak Trumpeter is turned face up, create X 1/1 red Goblin creature tokens.