If not, the next best thing is to connect your PC to the router through an ethernet cable
There is a limit of one promo card per order
There's a great likelihood that your opponents will attack you with more than one creature, draw more than one card in a turn, or cast more than one spell
If a Clue you control is already a creature when Tangletrove Kelp's second ability resolves, Tangletrove Kelp's second ability will overwrite any previous effects that set that creature's power and toughness to specific numbers
That generally isn't good enough
As for monsters, common targets to run include "Artifact Scythe" to lock the opponent from Summoning from the Extra Deck (prior to its Forbidden status), "Artifact Moralltach" to destroy an opposing card, and "Artifact Lancea" to prevent any cards from being banished