All friendly units with the Cold-blooded special rule within 6" of one or more Bastiladons with a Revivification Crystal gains the Regeneration (6+) special rule.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
All friendly units with the Cold-blooded special rule within 6" of one or more Bastiladons with a Revivification Crystal gains the Regeneration (6+) special rule.