Plus, with it being Level 5, you would need to lose a monster for this, which kills the card even more.
A decent 1700 DEF is the only thing that kept it from utter uselessness in the early meta, but iconic high DEF monsters like Mystical Elf and Giant Soldier of Stone have 2000 DEF
Finally, the card pool is an all-over-the-place mix of old and new, so Duel Links' monster archetypeslike Six Samurai, Naturia, Gladiator Beast, Lightsworn, Dark World, and E-Heroare missing crucial cards
Specifically, Lukka's mana value is always 5
Tapping creatures is often something people never see coming because the format has grown around exile removal being the preferred option
Meowscarada ( Shining Revelry ) is a particular standout in this regard - Fighting Claws dealing 60 damage for 2 Grass Energy is pretty underwhelming on a Stage 2, but if it hits a Pokmon ex, that 60 damage jumps to a hefty 130