Choosing Stalwart Force packs is more reliable than opening Master Packs, as the pulls are less random and provide more staple cards
Instead, your play these lands and then tap & sacrifice them to search your library for another land card of a specific type to place on the battlefield
If you draw Valkryie on your first turn and you have the other requirements met, wait another turn until your opponent Summons a monster so you can still Summon Odin
Once per turn: You can Special Summon 1 "Gladiator Beast" Fusion Monster from your Extra Deck, except "Gladiator Beast Tamer Editor", ignoring its Summoning conditions
It's the card they frequently use in duels and consider their favorite
This renders the Deck vulnerable to the effects of "Deck Devastation Virus" and "King Tiger Wanghu" (which destroy monsters with less than 1501 ATK and 1401 ATK, respectively), as well as "Full Force Virus" (which destroys monsters with less than 1501 DEF)