Fossil Dyna Pachycephalo
Earth/Rock – Effect/4/1200/1300
Neither player can Special Summon monsters. When this card is flipped face-up: Destroy all Special Summoned monsters on the field.
This card is amazing when used against the new Hieroglyph Dragon deck. Its 1200 ATK may seem measly, but once this card is successfully summoned NONE of their Main Decked Monsters can get past it due to its effect that prevents Special Summons.
Nepthe, Tfeni, Shiyu and REDMD will be stuck in the hand while Aset can only be summoned at 1000ATK which is not enough to get past Fossil Dyna.
The only card that can get rid of it is Raigeki Break while Book of Moon still needs the help of Nepthe’s Effect to get rid of it properly, as Fossil Dyna’s second Effect can still trigger when it is flipped.
After siding, the Hieroglyph player may side in these cards that may pose a threat to your Fossil Dyna according to the Match-Up.
Koaki Meiru Drago
Thunder King Rai-Oh
You can stop the two cards at the top with cards like Bottomless Trap Hole (Which is most likely sided against Hieroglyph Dragons) or all the other Monster Removal that your deck may play. Even if you can’t stop them, at least you survived a turn as they have to Normal Summon either Monster and attack your Fossil Dyna.
As for Dark Hole and Mirror Force, nothing much can be done to protect your Fossil Dyna short of Solemn Judgment unless you are playing Forbidden Lance. On the bright side, both cards are limited, so the chances of your Opponent getting either one is not very high.
Snowman Eater is usually sided against decks like Rabbit or Hero Beat and as usual nothing much can be done outside of cards like Forbidden Chalice, Nobleman of Crossout and Fiendish chain if they decide to flip it up manually.
Hope this post helps you guys out for when playing against Hieroglyph Dragons.