Crypt SliverBut many of the slivers' abilities were still being hammered out after their art was commissioned. For example, the oily form of Crypt Sliver originally had a Fear-like evasion ability. The art was originally intended to show a sliver that could dive down into the muck to avoid being seen. During development, Crypt Sliver's ability was seen as redundant with Shifting Sliver's near-unblockability, so was changed to a regeneration ability.
Hunter Sliver Hunter Sliver was originally slated to have another difficult-to-block ability, similar to Goblin War Drums or Vine Kami. It has two heads, which originally was meant to indicate its ability to engage multiple blockers. Its ability was swapped out for first strike and then eventually to Legions' new provoke mechanic.