If Emrakul is countered or otherwise leaves the stack in response to that triggered ability, the triggered ability will still resolve as normal
You can set up these triggers however you like, so if you want to have a few token Merfolk you have lying around try and power through your lands you can, while giving Hakbal and your other creatures the +1/+1 counter when you explore a nonland card
Deck halves will be based on the various factions in SolForges setting
While most card arts and attack names are taken from the physical TCG, "Zapdos" ( Fantastical Parade ) is specifically taken from Pokmon Trading Card Game (1998) for the Game Boy Color, having the same card artwork (but fully illustrated rather than its pixel art interpretation) and attack ("Heavy Thunder", which is an upgraded version of "Big Thunder" from the GBC game)
When declaring an attack under this danger threshold, Luffy lets the player draw one card from the deck and subsequently trash one card from the hand
Little X-Men joke for you there