Lucky Pendant improves probability-based synergy triggers for its carrier. It does not boost every synergy with random wording: if the synergy trigger is guaranteed and only the selected target/unit is random, Lucky Pendant does not appear to add value.
Synergies where Lucky Pendant has a real trigger to improve:
| Synergy | What it can improve |
|---|---|
| Assassin | Coup de Grace critical strike chance at (3)/(6). |
| Elemental | Elemental Essence stone trigger chance at (2)/(4). |
| Elf | Evasion/dodge chance, including the (9) Elf follow-up that happens after a dodge. |
| Hunter | Aimed Shot precise-shot chance at (3). The (6)/(9) Hunter precise shot is already 100%, so Lucky Pendant should not matter there. |
| Knight | Divine Protection shield proc chance at (2)/(4)/(6). |
| Monk | Drunken Stagger trigger chance for the execute/halve-health effects at (2)/(4). |
| Pandaren | Hospitality invite rolls. Pandaren uses its own +25% carrier formula; see the Pandaren page for the table. |
Likely non-targets despite random text: Aqir hatches a random Aqir after its condition is met, Goblin grants stats to a random ally, and Shaman transforms into a random higher-level piece. Those are random outcomes, not obviously Lucky Pendant-boosted probability checks.