My opponent has seven cards in their trash when I attack with a LV2 Island Bearer Francis. 【Crush: +1】 discards three cards from their deck, raising the total number of cards in their trash to ten. At this time, Island Bearer Francis gains 【Raid: 1】 from its LV2-LV3 effect. Can I then exhaust one of my nexuses to refresh it?

If I control a nexus, can I still summon Fort Golem for its original cost of 6 rather than for a cost of 4?

If 【Crush】 on one of my spirits discards two spirit cards into my opponent's trash, can I place two cores from the void onto one of my spirits?

When my opponent summons a LV1 spirit which has a When Summoned effect starting at LV2, can I use the LV2 effect on Ancient Colosseum to discard the top four cards of their deck?

My opponent blocks my attacking spirit with a soul core on it, and both spirits are destroyed since their BP are equal. At this time, can I use the LV1-LV2 effect on Honorable Duel to discard the top three cards of their deck?

Will a spirit being treated as its highest level due to the burst effect on Flood Stream remain at its highest level even if it no longer has any cores on it?

If a spirit is already being treated as LV1 for the duration of the turn due to another effect when the burst effect on Flood Stream says to treat it as its highest level, which effect takes precedence?

My opponent has the following on their field:
Two 3-cost spirits.
One 2-cost spirit.
Two 0-cost spirits.
Can I destroy one 3-cost spirit, one 2-cost spirit, and two 0-cost spirits using the flash effect on Flood Stream?

My opponent has the following on their field:
Two 3-cost spirits.
One 2-cost spirit.
Two 0-cost spirits.
Can I destroy only one 3-cost spirit using the flash effect on Flood Stream?

If I only control one nexus when I use the main effect on Blessed Cores, can I place two cores onto that nexus?