If this card is sent from the hand or field to the Graveyard: You can add 1 "Frightfur" card from your Deck to your hand
Rank 6 XYZ can be done with 2 Fusion monsters and you can make an M7 to grab a Dog from the graveyard or bounce I problem card the opponent controls, etc
They have very little interaction with the opponents field, outside of GolGars destruction
However, if youre a Yu-Gi-Pro and want to jump in at the deep end, you should try out Synchro of Unity or Link Generation
All of the Special Summon from hand abilities are hard once-per-turn effects, so you generally want to stay diversified and avoid drawing multiple copies
The mage-focused set still holds its own, though, packing together a bunch of staples that pair well with newer Spellcaster support cards