im not professional elements player, but I initially thought of using these cards as sacrificing sheeps.
From an amateur point of view, they definitely seems worth it, since pharaoh can keep spamming more creatures,
and dejavu is an cheap but effective 2 in 1 card.
Pheonix works great as it can revives, note that its not time element though so it requires at least a duo deck.
I really dun want to go caculate whether they are actually worth it compared to hourglass,
tucks myself to bed before oldtrees comes in.
True.
I guess it could work in something like big rush decks with various different sacrificable creatures, but I'd still prefer sacrificing them with immolations, it would at least get you some quanta.
I think I got what you mean, sacrificing all your creatures to draw cards ain't worth it.