[TippetsTX]

I wanted to add a similar element to the game, but I approached it differently. Instead of feats, my version of TFT has Powers.

Beyond Spells and Talents lie the realm of Powers; special abilities and feats that a character may unlock during their adventuring career by spending XP. They represent innate potential or untapped supernatural capacities that will enhance and expand the character's prowess. Unlike talents or spells, Powers do not typically require formal training or study although they will often have prerequisites or other qualifications that must be met before the chosen ability can be acquired (including story-driven criteria to be defined by the GM).

All Powers are grouped into distinct portfolios of five related and escalating abilities divided into three tiers. If used in conjunction with the new Legacy rules, the XP cost will escalate starting at 750 XP for 1st tier Powers, 1500 XP for 2nd tier, and 3000 XP for the final 3rd tier (in my own game, XP costs follow a different schedule). GMs may also choose to implement an alternative acquisition model for Powers that does not rely on the direct expenditure of XP. For example, a hero who quests to find a hidden monastery and then spends a year training under a Master may be granted one of the initial powers from the ‘Path of the Five Elements’ (from the Mystic Monk portfolio).

A character may purchase Powers from multiple portfolios, but in order to select a higher tier ability, they must have at least one of the lower tier powers in the same portfolio first. The ‘Rule of Five’ also applies which means that no character may acquire more than five total Powers regardless of tier or portfolio. Additionally, individual Powers generally do not have a per use ST cost like spells, but instead may be limited in other ways.

Powers are literally game-changers and as such, GMs should carefully consider their impact on the game before adding them as a character option.

Example Portfolios
Arcane Foci (Magister)
Divine Foci
Familiar Foci
Channeler (Positive Energy)
Necromancer (Negative Energy)
Mystic Monk (Path of the Five Elements)
Shadowborn
Skinwalker
Psionicist
Mage Hunter
Viridian Lord*
Fate Weaver*
Song Mage*
Master Thief
Geomancer

*These portfolios are specific to my Ptolus campaign for TFT (and several are still in development or playtesting).