Starting off, and to be fair, the "main" faction catafalque should be one of the more-notable Buddhist saints, such as Ānanda (highly-knowledgeable/bahuśruta: slight decrease in training time of citizens and monks, treasurer of the dharma/dharma-bhaṇḍāgārika: reduced glory and maybe other costs of certain technology/research) or Mahākāśyapa (ascetism/tapasyā: monks/priests healing rate and walking speed bonus, at the cost of around 1/4 to 1/2 of healing range when in range of catafalque; first patriarch/???: technology research time decrease for temple and maybe other structures). But generic śarīra (other eight disciples?) can have a common bonus of slight increase in healing (for monks/priests), attack (melee warriors), and harvest/collection (citizens) rates when in range of the "catafalque" (community/sangha/saṃgha), and glory trickle (veneration/pratīkṣā). A set number of relics can also be placed in different locations as map elements, outside of capture the relic mode.
If conflicting accounts of the Gautama Buddha's life can be dated to around the 0 A.D. era, he could be the main or Atlas-only catafalque, otherwise his wife or son; specific bonuses to be determined or based on the generic.