Here are my non-purchased 4 * items since I started tracking March 1 across two accounts.
7DD spending account
| Date | Item | Star | Color | Source |
|---|---|---|---|---|
| 3/1/2018 | Mystic Rings | 4 | Red | Rare Quest |
| 3/11/2018 | Mysterious Tonic | 4 | Green | Rare Quest |
| 3/21/2018 | Farsight Telescope | 4 | Blue | Rare Quest |
| 3/21/2018 | Mystic Rings | 4 | Red | Titan Loot |
| 3/25/2018 | Tome of Tactics | 4 | None | Raid Chest - Diamond |
| 3/30/2018 | Poison Darts | 4 | Yellow | Titan Loot |
| 3/31/2018 | Tome of Tactics | 4 | None | Rare Quest |
| 4/2/2018 | Mystic Rings | 4 | Red | Titan Loot |
| 4/7/2018 | Tome of Tactics | 4 | None | Raid Chest - Diamond |
| 4/7/2018 | Poison Darts | 4 | Yellow | Rare Quest |
| 4/16/2018 | Royal Tabard | 4 | Purple | Rare Quest |
| 4/17/2018 | Mystic Rings | 4 | Red | Titan Loot |
| 4/21/2018 | Farsight Telescope | 4 | Blue | Titan Loot |
| 4/24/2018 | Damascus Blade | 4 | None | Rare Quest |
| 4/30/2018 | Farsight Telescope | 4 | Blue | Titan Loot |
| 5/2/2018 | Mystic Rings | 4 | Red | Rare Quest |
| 5/9/2018 | Mysterious Tonic | 4 | Green | Rare Quest |
| 5/9/2018 | Farsight Telescope | 4 | Blue | Monster Chest |
| 5/11/2018 | Tome of Tactics | 4 | None | Elemental Chest |
| 4/10/2018 | Mysterious Tonic | 4 | Green | Titan Loot |
| 5/15/2018 | Mysterious Tonic | 4 | Green | Titan Loot |
| 5/17/2018 | Farsight Telescope | 4 | Blue | Rare Quest |
| 5/20/2018 | Tome of Tactics | 4 | None | Raid Chest - Diamond |
| 5/24/2018 | Tome of Tactics | 4 | None | Rare Quest |
24 Total: 11 rare quest, 3 raid chest diamond, 8 titan loot (10-14 star titans), 1 Monster chest, 1 elemental chest.
Insurrectionist low spending account
| Date | Item | Star | Color | Source |
|---|---|---|---|---|
| 3/1/2018 | Mystic Rings | 4 | Red | Rare Quest |
| 3/11/2018 | Mysterious Tonic | 4 | Green | Rare Quest |
| 3/13/2018 | Farsight Telescope | 4 | Blue | Titan Chest |
| 3/19/2018 | Tome of Tactics | 4 | None | Raid Chest - Platinum |
| 3/21/2018 | Farsight Telescope | 4 | Blue | Rare Quest |
| 3/26/2018 | Mysterious Tonic | 4 | Green | Titan Loot |
| 3/31/2018 | Tome of Tactics | 4 | None | Rare Quest |
| 4/7/2018 | Poison Darts | 4 | Yellow | Rare Quest |
| 4/16/2018 | Royal Tabard | 4 | Purple | Rare Quest |
| 4/24/2018 | Damascus Blade | 4 | None | Rare Quest |
| 4/29/2018 | Farsight Telescope | 4 | Blue | Mystic Vision |
| 5/2/2018 | Mystic Rings | 4 | Red | Rare Quest |
| 5/3/2018 | Damascus Blade | 4 | None | Titan Loot |
| 5/9/2018 | Mysterious Tonic | 4 | Green | Rare Quest |
| 5/9/2018 | Farsight Telescope | 4 | Blue | Titan Loot |
| 5/17/2018 | Farsight Telescope | 4 | Blue | Rare Quest |
| 5/25/2018 | Tome of Tactics | 4 | None | Rare Quest |
17 Total: 11 Rare Quest, 3 Titan Loot, 1 Titan Chest, 1 Raid chest platinum, 1 Mystic Vision
Titan loot seems to be the main difference (99% of 10-14 stars vs 80% of 8-10 stars) and 2 more from diamond chest vs platinum.