If you used a Light Monster, Monster Effects wont be able to remove it and if you use a Dark, it gets battle destruction
ST13-008-sabo is another option to self-damage, and since we're KOing one of the opponent's Characters, we're shifting the field presence in our favor
Life Equalizer has the bizarre effect of when theres an 8000 Life Points difference between both players, then both players Life Points become 3000
To summon Gate Guardian, you need to tribute Sanga of the Thunder, Kazejin, and Suijin
While these are both fairly minor synergies Seal of Fire was a pretty solid card prior to these little boosts
The monsters are strong enough as they are with Spells and Traps being unable to stop them attacking once they attack but some take it further with other effects like Ancient Gear Wyvern allowing you to search your deck for anything Ancient Gear related, Ancient Gear Hunting Hound allowing for a Fusion Summon once it hits the field and the Gadjiltron archetype allowing you to use different effects depending on which Gadget monsters you tribute to summon the monsters