In the incredibly rare case where, during your cleanup step, Ancient Adamantoise is phased out with damage marked on it, Ancient Adamantoise's second ability won't apply and all marked damage will be removed from it during that cleanup step
The first is a triggered ability: "When this permanent enters, target player may search their library for a card named [name], reveal it, put it into their hand, then shuffle." (6/6/2025) Note that the target player searches their library (which may be affected by effects such as that of Stranglehold) and that the card they find is revealed, even though these words aren't included in the ability's reminder text
Add to that the amount of Ruby cards with Rush, and Ruby's truly doing its job here (aka
This is kind of like Fling, but a little more flexible because if your creature has higher toughness than power it can survive
This scene was chosen to align with the start of the celebration of The Lord of the Rings: Tales of Middle-earth release in the same way that Frodo's (and the reader's) journey begins in The Fellowship of the Ring