You can absolutely create cards featuring yourself, a pet, an original character you created, or a friend (with their permission)
Eluge, the Shoreless Sea Though Magic has many cost reducers, Eluge, the Shoreless Sea distinguishes itself by reducing the amount of mana you need to pay to cast a spell
(This Digimon checks 1 additional security card.) Lower Text - Promo Info Prize for Championship 2023 2nd Preliminary Round CLOSECLOSE BT6-015 U Digimon Lv.5 Parallel Rare SaviorHuckmon Color Red Form Ultimate Attribute Data Type Dragonkin DP 7000 Cost 7 Digivolve Cost 1 3 from Lv.4 Digivolve Cost 2 - Upper Text [When Digivolving] You may play 1 Digimon card with [Sistermon] in its name from your hand without paying its memory cost
There is a catch with the card, however, and that it is banned from all official Trading Card Game tournaments
There are plenty of cards that technically fit the criteria I presented but dont feel like group slug cards
It's important to note that these patterns can vary based on the speed of the set