Premium Lucky Blocks are the recommended path for Index completion — they concentrate the rarity distribution on the top three tiers (Legendary → Beyond) where most missing animals live.
Standard Lucky Blocks cover the full 9-rarity ladder. Best for filling out the common half of the Index.
Premium Lucky Blocks are re-normalized to Legendary → Beyond (top three rarities). The Index ETA tool models the Standard/Premium roll mix with editable Premium share.
Keep entries useful by separating source-backed facts, player-tested strategy, and update timing.
Keep rarity, obtain method, abilities, and summary tied to official posts or repeatable in-game testing.
Link lucky blocks entries to matching builds, boss routes, and guide sections.
Keep tier values and obtain methods current after each game update.