Help!!!!! My first modern deck, i need advice plz!

Modern* Combo Mill UB (Dimir)

tonyperry65

Creature (8)

• 4x Hedron Crab
• 4x Snapcaster Mage

Planeswalker (3)

• 3x Ashiok, Nightmare Weaver

Land (20)

• 4x Darkslick Shores
• 4x Drowned Catacomb
• 4x Ghost Quarter
• 2x Island
• 2x Nephalia Drownyard
• 4x Watery Grave

Instant (13)

• 4x Archive Trap
• 2x Go for the Throat
• 3x Surgical Extraction
• 4x Visions of Beyond

Sorcery (16)

• 2x Breaking / Entering
• 4x Glimpse the Unthinkable
• 2x Haunting Echoes
• 4x Mind Funeral
• 4x Tome Scour

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Sideboard

Instant (4)

• 2x Crypt Incursion
• 2x Go for the Throat

Sorcery (3)

• 1x Breaking / Entering
• 2x Thoughtseize

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Maybeboard

Creature (3)

• 3x Invisible Stalker

Planeswalker (3)

• 2x Ashiok, Nightmare Weaver
• 1x Jace, Memory Adept

Land (1)

• 1x Nephalia Drownyard

Enchantment (1)

• 1x Leyline of the Void

Artifact (5)

• 1x Nihil Spellbomb
• 1x Pithing Needle
• 1x Ratchet Bomb
• 2x Sword of Body and Mind

Instant (9)

• 1x Go for the Throat
• 4x Psychic Strike
• 4x Thought Scour

Sorcery (2)

• 1x Breaking / Entering
• 1x Thoughtseize

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I almost have all these cards together so give me some pointers and advice and tell me what you think. PLease and Thank you :)

Date added	10 years
Last updated	10 years
Legality	This deck is Modern legal.
Rarity (main - side)	7 - 2 Mythic Rares 33 - 1 Rares 14 - 2 Uncommons 4 - 2 Commons
Cards	60
Avg. CMC	2.55