When Wildclaw and Cithria both enter play at the same time, can Wildclaw spend the buff that Cithria generates with her 'when enter' trigger?

Ruling: Yes, Wildclaw can spend the buff generated by Cithria. You can order your own triggers, so you put Wildclaw's trigger on the chain first, then Cithria's trigger. Cithria's resolves first giving her a buff, then Wildclaw's resolves and can spend that buff.

Sequence:

• Both triggers go on the chain
• Put Wildclaw's trigger on the chain first
• Put Cithria's trigger on the chain second
• Cithria's trigger resolves first, giving her a buff
• Wildclaw's trigger resolves second, and can spend the buff Cithria received

Nuances:

• "Spend a buff" does not target the buff when going on the chain, even though buffs are technically targetable game objects under current rules
• The word "spend" indicates a cost rather than targeting
• This interpretation aligns with design intent, though there was initial uncertainty about whether current rules fully supported it