Overview:

This Yidris, Maelstrom Wielder deck leverages cascade triggers and landfall synergies to generate overwhelming value. The strategy focuses on ramping aggressively to enable Yidris's cascade engine, then casting high-impact spells that chain into free permanents via cascade. Secondary landfall themes with Omnath, Locus of Rage, Scute Swarm, and Rampaging Baloths create massive boards, while cards like Primal Surge and Apex Devastator serve as explosive "cascade bombs." Yidris acts as the linchpin for the cascade value engine but has redundancy through Wild-Magic Sorcerer and Maelstrom Wanderer. The deck can pivot between combat wins, landfall token swarms, and cascade-driven value storms.

Primer:

Core Strategy Execution:

1. Early Setup (Turns 1-4):
   • Deploy mana accelerants like Birds of Paradise, Sol Ring, and Azusa, Lost but Seeking to enable early Yidris casts.
   • Use land tutors (Three Visits, Evolving Wilds, Farhaven Elf) to trigger landfall and fix mana.
   • Cast Yidris by Turn 4 using painlands/fetchlands, prioritizing trample enablers like Whispersilk Cloak to connect for cascade.

2. Midgame Value (Turns 4-7):

   • Activate Yidris's cascade by attacking, then chain mid-cost spells (4-6 CMC) like Damia, Sage of Stone or Temur Ascendancy into free permanents.
   • Exploit landfall triggers with Ancient Greenwarden, Titania, Protector of Argoth, and The Gitrog Monster to generate tokens/card advantage.
   • Deploy backup cascade engines: Wild-Magic Sorcerer for first-exiled-spell cascade or Maelstrom Wanderer for double cascade.

3. Win Conditions (Turns 6+):

   • Combat Overkill: Use Craterhoof Behemoth, Moraug, Fury of Akoum (extra combats), or Kessig Wolf Run to amplify token armies.
   • Cascade Storms: Resolve Apex Devastator (quad cascade) or Primal Surge (permanent flood) for game-ending boards.
   • Exile Synergies: Passionate Archaeologist and Nalfeshnee convert cascade/exiled casts into direct damage.

Mulligan Priorities:

• Keep hands with 3+ lands (including at least 1 green source) and 1-2 ramp pieces.
• Prioritize Yidris enablers: Whispersilk Cloak, early mana dorks, or land tutors.
• Reject hands lacking ramp or with only high-CMC spells.

Key Tips:

• Sequence land drops carefully with Dryad of the Ilysian Grove/Oracle of Mul Daya to maximize landfall triggers.
• Use Sylvan Safekeeper to protect Yidris from targeted removal.
• Primal Surge should be cast only if most of the deck's top is permanents (≈80% of the list).

Weaknesses:

Critical

• Yidris Reliance: Failing to connect with Yidris (due to blockers/removal) cripples cascade value generation.
• Graveyard Dependence: Scute Swarm, Titania, and recursion tools fold to Rest in Peace/Bojuka Bog.

Moderate

• Slow Setup: Painlands/taplands and lack of fast mana (e.g., Mana Crypt) delay critical T4 Yidris.
• Board Wipes: Blasphemous Act/Cyclonic Rift reset token armies with minimal recovery tools.

Minor

• Limited Interaction: Only 5 targeted removal spells (e.g., Imprisoned in the Moon) for problematic permanents.
• Cascade Variance: High-CMC spells risk whiffing on cascade triggers (e.g., cascading into Primal Surge off a 6-drop).

Most Important Cards:

• Yidris, Maelstrom Wielder (Cascade engine enabler)
• Craterhoof Behemoth (Primary combat finisher)
• Primal Surge (Game-ending cascade bomb)
• Dryad of the Ilysian Grove (Land acceleration/fixing)
• Apex Devastator (Quad-cascade value)
• Ancient Greenwarden (Landfall doubler)
• Maelstrom Wanderer (Redundant cascade source)
• The Gitrog Monster (Card draw/land recursion)
• Omnath, Locus of Rage (Token generator)
• Temur Ascendancy (Haste + card draw enabler)

Attribute Ratings:

Speed: 6/10

• Can threaten wins via Primal Surge/Apex Devastator by T7-8, but relies on setup turns for Yidris/cascade chains.

Resilience: 5/10

• Moderate recursion (Eternal Witness, Splendid Reclamation) but folds to graveyard hate. Limited protection for key pieces.

Consistency: 7/10

• 14 land tutors and 8 card-draw engines ensure land drops, but cascade variance and lack of spell tutors reduce combo reliability.

Interaction: 3/10

• Minimal targeted removal (5 cards) and no counterspells. Relies on board presence over disruption.

Rating Justification:

This deck operates as a focused midrange build with T7-8 win potential through cascade chains and landfall swarms, but lacks the interaction and speed for higher tiers. Its resilience is hampered by Yidris dependency and graveyard reliance, aligning it with optimized casual decks that dominate through value rather than combos.

Power level: 5.5 - 6.5