It seems everything is clear regarding sets—they cannot be used at all. When playing as Jebus, any relics can be used in any quantity, except for wings, but you cannot assemble, for example, the Angel Alliance from them. If playing as Balance, for instance, where there should be no relics, then in the event that you somehow manage to assemble a relic set (e.g., tombs gave armor +4+4 and a crown +4+4, and the remaining artifacts were found on the map), you can equip either one relic (either the crown or the armor), or all other lower-level artifacts (2 rings + cloak + sword + greaves + dragon shield). In short, this doesn't apply to this tournament, and in other games it would be practically impossible.

Pit for LM (red, Fortress, Tazar, Tazar) def M4-Masterkey (blue, Rampart, Ivor, Ivor), Jebus, 132.
After the restart, due to slow roads and skewed spawn (two unguarded passages into the desert), we began.
The generation was decent—near the castle there are caches of hydras and gorgons, a couple of hives, and a conservatory. The village is a Dungeon, unguarded. Starting artifact is +1 speed, both swamp-dwellers have 3 stacks, and lizards are built.
112 - I take the Dungeon, Tazar levels up on demons and a chest, and gets Logistics.
113 - Kreg took a crypt with a spirit of despair and a gemstone mine; Tazar skips almost an entire turn before the guard of the hydra cache (I didn't want to face 10+ (clearly closer to 20—with 3 packs) minotaurs without a hydra).
114 - I buy a hydra, beat the minotaurs, then while going for mummies in Pandora, I get 90 gnolls and take the hydra cache.
115 - I build a portal with a hydra, take the basilisk cache and +3 armor; Tazar takes a hive with 8 wyverns (Vidomina's 3 stacks came in very handy there), Terek reaches the second village with troops—Barbarians.
116 - chain +4, gold mine; Tazar takes the tree for almost 100 gold using lizards, there are 6 wyverns. I didn't venture into the conservatory for the 2-stack because angels aren't needed yet, they only cause a penalty in the swamp...
117 - for a dozen black knights: a +2 shield and the tree with 6 wyverns. Dwarf warehouse with 15 each. Cleared 3 gnoll caches. Tazar - with basic earth magic, wisdom, and advanced attack, level 9. In the capital - 1-7 in the castle. Guard - grey bears, unpleasant.
121 - maxed out medusa warehouse, +1 spell power, experience from a chest—now have advanced earth. A slow scroll is also available; I can hit the Guard.
122 - I get crushed by the conservatory, buy a book, and run to the Guard. Using Vidomina, I take 2 angels; Kreg cleared the gorgon cache with hydras from the new growth.
123 - 20 wyverns take the naga-bank for 3 nagas, resources are exchanged for gold, hydras are upgraded. 7 grey hydras kill 10+ champions for the cloak of negation; everything is collected and handed to Tazar. He kills the Guard, losing 4 wyverns, 3 gorgons, 4 basilisks, and a few gnolls, which is tolerable. Mass Earth is granted. 10+ grey hydras now kill the library and fire book without problems. After the +2 all boost, I sit in the city to replenish mana.
Until the end of the week, I run around the treasury, trying in vain to find anything powerful. There isn't a single hive, utopia, or decent relic...
124 - Pandoras with 20,000 and 10,000 experience, cloak +2+2, sword +3, +1 luck.
125 - Prison with a decent Crellion (expert pathfinding), water book, +2 armor, Inferno city, Pandora with 15 abyss lords.
126 - I start slowly converting gnolls into demons. Found perhaps the only useful artifact—the red orb. Pandora with 15,000 gold and Kairi the scout in prison.
127 - minimal conservatory, naga-bank for 3, Pandoras for 5,000 experience and water magic.
131 - I collect everything, get crushed, and hit the Guard near the opponent (archdevils). At the entrance, there is an untouched hive—+6 wyverns. Ivor takes the field against Tazar:
Tazar (lev 21) (11, 15), expert attack, defense, tactics, 13 abyss lords, 19 gorgons, 11 chaos hydras, 3 angels, 52 horned demons, 31 wyverns, 22 great basilisks, +2 life and red orb
Ivor (lev 11) (3, 14), expert attack and defense, 3 angels, 48 combat unicorns, 34 high elves, 25 silver pegasi, 70+ combat dwarves, 18 warrior dendroids, 80+ centaurs.
Against a high-level Tazar with higher stats, even 5 unicorn caches didn't help; the battle was easily won.
Thanks for the game.

Only one utopia spawned on the entire map at the neutral castle spawn, and even that one was garbage.