more rulings that i found interesting.

1. goyo vs machina fortress:
chain link 1: machina fortress, since it is mandatory.
chain link 2: goyo, since it is optional.
goyo whack machina fortress, or machina fortress suicide with goyo, you still get to snatch machina fortress.

2. blackfeather dragon doesnt work with against the wind:
since you are not taking any damage due to blackfeather dragon's effect, you do not add the targeted monster to hand.

3. multiple gladiator beast fighting each other:
example: player A has 2 gladiator beast, player B has 1, after fighting, battling, gladiatoring(LOL...), all of turn player's gladiator beast gets to tag first, followed by his opponent. gladiator beasts do not chain to each other, they form their own chain and are resolved separately.

4. dark bribe has no cost:
1.letting your opponent draw a card is not a cost, but part of the effect.
2.you cannot activate dark bribe if your opponent has no card in his deck.