While thats good news and does mean you can play all the elementals ever printed in your deck, the Horde itself isnt exactly a powerhouse by todays standards
When you need to have an answer to anything thrown at you, the best way is to draw a lot of cards before then
Main Phase, where the turn player can play the cards from their hands, activate effects, summon monsters
If you apply Pokey's third ability as a replacement effect to rolling a d20, other than the original effect that called for the d20 roll, all other game effects, including replacement effects and triggered abilities, recognize that you flipped a coin rather than rolled a d20
Card Grading: Near Mint (NM) - Cards in Near Mint (NM) condition show minimal to no wear from shuffling, play or handling and can have a nearly unmarked surface, crisp corners and unblemished edges outside of a few minimal flaws