yugioh cards level 4 Number 4: Stealth Kragen(Yugioh/Yu-Gi-Oh! Card ocg by MuriloNeckel on DeviantArt BEST Level 4 Monsters In

Heres some side on pictures which might help

Grass type Pokemon are depicted in green, Fire type in red, Water type in blue, electric type in yellow, and fighting type in grey

Additionally, Split Up might fit into the sideboard because I imagine you can set it up as a one-sided sweeper in creature mirrors

And I guess you can use boast effects twice if you really want to, but the available pool of boast cards is small, underpowered, and sometimes doesnt even get anything of consequence out of a second use

Either way, this is too unique of an ability not to mention, but the main problem with "halve their life" abilities is that they can never outright kill a player

Make sure you know if your card is special so you can price it appropriately