Scour the Laboratory

Delirium — This spell costs less to cast if there are four or more card types among cards in your graveyard.
Draw three cards.

Stupefying Touch

Enchant creature
When Stupefying Touch enters the battlefield, draw a card.
Enchanted creature’s activated abilities can’t be activated.

Diminishing Returns

Each player shuffles their hand and graveyard into their library. You exile the top ten cards of your library. Then each player draws up to seven cards.

Ulvenwald Mysteries

Whenever a nontoken creature you control dies, investigate. (Create a colorless Clue artifact token with “, Sacrifice this artifact: Draw a card.”)
Whenever you sacrifice a Clue, create a 1/1 white Human Soldier creature token.

Briarbridge Patrol

Whenever Briarbridge Patrol deals damage to one or more creatures, investigate. (Create a colorless Clue artifact token with “, Sacrifice this artifact: Draw a card.”)
At the beginning of each end step, if you sacrificed three or more Clues this turn, you may put a creature card from your hand onto the battlefield.

Malakir Soothsayer

Cohort — , Tap an untapped Ally you control: You draw a card and you lose 1 life.

Weapons Trainer

Other creatures you control get +1/+0 as long as you control an Equipment.

Grove Rumbler

Trample
Landfall — Whenever a land enters the battlefield under your control, Grove Rumbler gets +2/+2 until end of turn.

Tajuru Beastmaster

Rally — Whenever Tajuru Beastmaster or another Ally enters the battlefield under your control, creatures you control get +1/+1 until end of turn.