Thranduil, the Elvenking - Intelligence

Thranduil reached 5,594 decks in the report snapshot, and Buried Alive remains in about seven out of ten lists because it loads the exact Elf abilities the commander needs for combo lines.

Thranduil gains only activated abilities of Elf cards in your graveyard.

Activated abilities are identified by a cost, a colon, and an effect.

Static and triggered abilities of graveyard Elf cards are not gained.

The available ability set updates as graveyard contents and card types change.

An Elf card leaving your graveyard removes that ability for future activations.

An already-activated ability remains on the stack independently of the graveyard card.

Thranduil is the source of each gained ability.

Self-referential printed names on gained abilities refer to Thranduil.

Tap and untap symbols on gained abilities tap or untap Thranduil.

Summoning sickness restricts gained tap-symbol and untap-symbol abilities.

Haste and as-though-haste permission effects need exact text before they allow immediate activation.

Gained mana abilities do not use the stack.

Gained non-mana abilities use the stack unless another rule says otherwise.

Sacrifice-self costs sacrifice Thranduil, not the graveyard card.

Counters used as costs are placed on or removed from Thranduil.

Power and toughness checks use Thranduil's current values where appropriate.

Zone-restricted abilities can be unusable if their instructions only work from another zone.

Cycling, unearth, channel, ninjutsu, and similar abilities require exact zone and cost verification.

Linked abilities acquired together remain linked only as allowed by rule 607.

An undefined linked choice produces no relevant result.

Multiple identical gained abilities remain separate instances.

Type-changing effects that apply to graveyard cards can affect Elf eligibility.

Ashes of the Fallen can make creature cards in your graveyard the chosen type for Thranduil checks.

Maskwood Nexus affects creature cards outside the battlefield through its explicit all-zones text.

Battlefield-only type-changing effects do not alter graveyard eligibility.

Another legendary Elf excludes Thranduil himself entering.

A permanent must be both legendary and an Elf when it enters to trigger Thranduil.

Legendary changelings qualify if they enter as legendary Elves.

Token copies can qualify if they enter as legendary Elves.

Several qualifying permanents entering create several separate triggers.

Legend-rule removal does not erase a trigger that already triggered.

Each trigger draws two cards and then discards one card.

The discarded card does not need to be an Elf.

The legendary-Elf trigger does not target.

Replacing the draws does not automatically remove the discard instruction.

An existing Thranduil can trigger when another Thranduil enters under your control.

Use Buried Alive, Entomb, Survival, or Fauna Shaman to place selected Elf abilities in the graveyard.

Use Thranduil's draw-two-discard-one trigger and black recursion to reuse legendary Elves.

Put Elf mana abilities into the graveyard, then use Thranduil's 5/6 body as the mana engine.

Play a normal Elf shell that can still exploit discarded or destroyed activated-ability Elves.

Use Ashes of the Fallen or Maskwood Nexus to make more graveyard creature cards count as Elves.