Number Thirteen Back to Black, and, in fact, all of the colors with this Mono-White cost 5-drop with one activated ability for each color
He also has a Blood Artist effect: whenever another creature dies, you gain one life and target opponent loses one life
Card advantage that rummages and wheels like Unexpected Windfall and Imposing Grandeur are your best friends, both to fill the graveyard for cost reduction and to make sure you have enough cards to reliably trigger Eris
Tivit's council's dilemma ability is absolutely supercharged with Time SieveTime Sieve, often with the addition of Academy ManufactorAcademy Manufactor or other cards to net you infinite terms: No wonder he's in the top 100 most popular commanders, according to EDHREC data
If you have requests for slight changes or variations please put them in the comments and I will do my best to fulfill your request or shoot you a message if any change would cause a price fluctuation
There're my Top 5 Five-Color Support spells
