In general, I would look at these two factors when looking to include cards not of your tribe's creature type: Is this creature so strong that it, on its own, is generally stronger than my tribal creatures when they are receiving bonuses and/or empowering my other cards
[spoiler=RWBY Searing Soul] 1 or more "RWBY" monster(s) + 1 LIGHT monster If this card is Fusion Summoned, using "RWBY Yellow" as a Fusion Material: You can target any number of monster(s) you control, up to the number of Fusion Materials used for this card's Fusion Summoning
You are free: to share to copy, distribute and transmit the work to remix to adapt the work Under the following conditions: attribution You must give appropriate credit, provide a link to the license, and indicate if changes were made
Flip the card and those loose strokes coalesce into Ifrit, Warden of Inferno himself: A tower of obsidian muscle and fissures of living fire
Above all, the card draw effect provides a significant resource advantage to players with The One Ring in the long game, provided they're able to prepare for (or mitigate) its self-damaging effects