A 'tribute' must be something you control. You can only tribute something you do not control, if the card specifically says you can, such as Lava Golem.
You can never tribute an opponent's monster unless the card specifically says you can (Lava Golem, Soul Exchange).
You can never tribute something you don't control unless the effect specifically lets you.So Soul Exchange, Trap Eater, Lava Golem are all examples of something that allow you to tribute your opponent's cards, and they all clearly say so.But if there is no text allowing it, then by default, it can only be a card you control, ie, something on your side of the field.
Unless stated otherwise (Plaguespreader Zombie for example) a monster's special summon is done from hand only. Lava Golem must be in your hand, for you to be able to special summon it using the listed text on the card.
In either of your own main phases, you can special summon lava golem. Rather than offering the cost from your own side of the field, Lava Golem says to use the opponent's monsters. So you send the opponent's two monsters to the graveyard and place Lava Golem on their side of the field. Either player can try to negate it, in which case it will be destroyed and go to your graveyard.
No part of Lava Golem's text forbids it from being used as tribute. You can tribute it exactly the same as your usual monsters.
A 'tribute' must be something you control. You can only tribute something you do not control, if the card specifically says you can, such as Lava Golem.
You can never tribute an opponent's monster unless the card specifically says you can (Lava Golem, Soul Exchange).
Lava Golem is a Yu-Gi-Oh card worth around $2.00
You can only ever tribute monsters that are on your side of the field, unless a card specifically lets you. Cards like this are Soul Exchange, and Lava Golem.
Lava Golem is a Yu-Gi-Oh card worth around $2.00
You can only ever Tribute something that you control, unless specifically instructed to do otherwise. Cards like Lava Golem and Soul Exchange for example, are cards that specifically say the opponent's monster can be tributed.
Yes, Lava Golem only requires Blue-Eyes Shining Dragon as a tribute. Lava Golem does not specifically target Blue-Eyes Shining Dragon nor is it an actual effect. Therefore, Blue-Eyes Shining Dragon cannot activate its effect where it negates and destroys cards that designates it as a target.
The only time you can ever tribute something you do not control, is if a card specifically says so. Lava Golem lets you tribute the opponent's monsters, and Soul Exchange can let you do so too. However if there is no text like this, then the tribute must come from amongst monsters you control.
Lava Golem's Special Summon does not start a chain, so you cannot chain Epidemic Virus when it is tributing the monsters. You must use it before it would be Summoned or the intended target for Virus probably would not be there for it use.
No, because there is no Lava Golem in Pokemon. Perhaps you meant just Golem in general? If that's the case, it depends on the levels and Magmar's moveset.
Unless stated otherwise, tributes must be from amongst monsters you control. So you tribute the opponent's monsters for Lava Golem because he says so, but you could not for The Regulation of Tribe.