Special Summons from your Deck / Sets from your Deck / Special Summons face-down
You need a spell/trap to trigger. The spell/trap *must not* read:
or you will miss the timing, it should read:"destroy and"
Traps like Trap hole will miss there timing if they are part of a chain. (Chain resolves timing is missed (the hamster will not miss this timing)) unless they start the chain
Tributing is a miss timing since after minion is destroyed, you *then* tribute summon.
Summoning a set flip summoning card is pretty OP and can even validate the use of traps like "Opss" which reads; destroy a minion you control. (What an absurdly bad card)
Your 1 block now blocks 2 attacks, you thin your deck, and line your graveyard. Since its a trap, you can activated it at the end of your opponents turn, so you can flip it your self. Allowing you to tribute summon a lvl 5 or 6, to enable a synchro summon of stardust dragon or diagusto, which will again. Line your graveyard.