Mystical Tutor

Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top.

Leveler

When this creature enters, exile all cards from your library.

Strip Mine

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target land.

Sinister Sabotage

Counter target spell.
Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Spellseeker

When this creature enters, you may search your library for an instant or sorcery card with mana value 2 or less, reveal it, put it into your hand, then shuffle.

Baral, Chief of Compliance

Instant and sorcery spells you cast cost {1} less to cast.
Whenever a spell or ability you control counters a spell, you may draw a card. If you do, discard a card.