Laboratory Maniac

If you would draw a card while your library has no cards in it, you win the game instead.

Reliquary Tower

You have no maximum hand size.
{T}: Add {C}.

Stormcatch Mentor

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Instant and sorcery spells you cast cost {1} less to cast.

Counterspell

Cascade Bluffs

{T}: Add {C}.
{U/R}, {T}: Add {U}{U}, {U}{R}, or {R}{R}.

Propaganda

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Accumulated Knowledge

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.