Maglor, The Minstrel

Maglor can't attack or block.
Noldolante - Whenever your opponent casts a creature, instant or sorcery spell, you can pay {u/r}{u} and 1 life to counter it.
Oath of Feanor - Whenever an ability of an artifact
that an opponent controls is activated, you can
pay {1}{r/w}{u} to cancel that ability.