Here's how Anck-su-namun kills Evyeln and Thomas saves Celestia in Thomas, Twilight, and The Mummy Returns.

Eveyln: [sees something] Rick.

[We see the sun is rising]

Rick: Let's go, Alex! [grabs his hand]

[They all start racing to the pyramid]

Rick: Run! Come on, Alex, faster! Come on! Come on!

Alex: Dad, the bracelet!

Rick: Run! Come on! [picks him up]

[They raced to the pyramid, just in time!]

Rick and Alex: [panting]

Rick: You know? It's not, easy being a dad.

Alex: Yeah, but you do it really good.

Rick: Thanks.

[The bracelet detaches and Alex throws it, and the rest of the group comes up tired but triumphant]

Eveyln: They made it. Thank God.

Johnathan: Oh, yes. Great. Fabulous.

[But unknown to them, the villains came up]

Queen Chrysalis: See, what I tell ya? He lead us right to them!

[Anck-su-namun stabs Eveyln!]

Rick: NO!

Imhotep: [throws Johnatahn]

Rick: Evy! Evy! Johnathan! Johnathan!

Alex: Mom! You're going to be all right isn't she, dad?

Rick: She'll be fine.

Alex: She's going to be all right?

Rick: Just get him. Take him. Take.. Mommy's fine. It's okay.

Megatron: Now to finish you off, Celestia.

Princess Celestia: You wouldn't dare!

Megatron: Oh, yes I will. [he takes out his shotgun and points it at Celestia] You're so weak!

Thomas: [is just racing into view and sees his mentor about to be killed] NO!

[Celestia turn her head away and shuts her eyes prepared for the worst]

Megatron: [cocks his shotgun and fires]

Thomas: [drives in front of Celestia at the last second and is hit by the blast as "Star Wars Episode I: "Qui-Gon's Noble End" starts playing] (as Optimus) AAAAAAAAAAAAAHHHHHHHHHHHH!!!!!!! [he tumbles over cab over wheels]

Princess Celestia: [opens her eyes and her jaw drops as he sees her student tumble]

Rick O'Connell: [looks toward them when he hears the blast]

Twilight: [looks back and her jaw drops at the sight]

Megatron: [put his shotgun away]

Thomas: [tumbles over a feet more feet and then lands on his side]

Shai-Shay: [GASP]

Cadance: NO! THOMAS!

Percy: Oh no, Megatron got Thomas!

Johnathan: Your mother's gonna be fine, okay?

Rick: Oh, my God! You're real strong, you're going to make it, you're going to make it. You're fine. What do I do? What do I do, Evy? What do I do?

Eveyln: Take care of Alex.

Rick: No. Sweetheart, no.

Eveyln: I love you. [she slowly dies]

Rick: No, don't... No, no! Evy? Evy? No, no, Evy! [cries] Come back, Evy. Evy, come back. Come back. [cries]

Thomas: [groans] Guys, run.

[then Thomas slowly shuts his eyes and is now gone]

Willy: [looks close at Thomas] I'm afraid.... he's a goner.

Twilight: NOOOOOOOOOOOO!!!!!!!!!!!!!!!!!!!!!