Anteatereatingant can only give up its 'potential to attack' once per turn. So it can only activate its effect once per your turn.
Yes it can if you don't activate Stardust Dragon's effect. But you can choose to activate his effect to Tribute Stardust Dragon to destroy and negate EHAZs' effect.
No. It is an Ignition Effect, meaning you may only activate Snipe Hunter's effect during your turn.
Magic planter
Yes, they can. You can also play another field spell to remove the one that is currently in effect.
You cannot manually. Such an occurence could only result from a card effect.
The difference between Mandatory and Optional Triggers is that Optional ones say 'you can', Mandatory ones don't. Mandatory ones must be carried out if possible, even if you don't want to.Man-Eater Bug's effect is a Mandatory Trigger, it must activate, even if the only thing it can destroy is itself.
No. Giving up your attack for the turn is his condition to use the effect. Once you attack, you can't activate the effect.
Ocean Dragon Lord - Neo-Daedalus comboing with Dimentional Fissure let me say tho the Ocean dragon's effect is a pain to even attempt to activate but if you can activate it and you have DF already activated then your golden! (more or less) XD (as far as i no theres no such card and if there is either konami will make it a pain to use or its ban the card)
As a targetted effect, you have to pick the monster you wish to summon when you activate the effect. If you don't have a valid target in your graveyard, then you cannot activate that effect.
Yes. When Grapha is discarded by an effect, its trigger will activate. You can chain Gladiator Beast War Chariot to negate this activation.
Yes, generally you canBUT there are some cards that doesn't allow the effect to activate if you attack. Example is Chaos Sorcerer.so make sure to read the card text first.
He can't destroy them by battle, but he can destroy them with his effect. No, Copycat's effect targets, and Obelisk can't be targetted.