User:UltimateKuriboh/Konami article rulings

Changing Destiny
"(The attacking player chooses to either increase his or her own Life Points or inflict damage to the defending player.)"

"Possession" counts also counts as your monsters whose Summon are negated
"Whether by Torrential Tribute, Atlantean Marksman, or even Solemn Warning on their Normal Summon, the Hands will still be able to activate, provided that there’s a target for their destruction effects."