Silas Adun, Erudite Scholar

Flash
Silas Adun, Erudite Scholar costs {x} less to cast,
where X is the converted mana cost of the spell
being cast.
When Silas Adun, Erudite Scholar enters the
battlefield, counter target spell.
{t}: Until the end of the turn, target creature
loses all abilities. Then another target creature
gains these abilites until the end of the turn.