Heros Downfall and Deadly Plot are both fantastic options, the latter doubly so if youre running a few Zombies
As a result, it could see the return of a creature from the Dungeons & Dragons: Adventures in the Forgotten Realms set

Aang and Katara Aang and La, Ocean's Fury Aang, A Lot to Learn Aang, Air Nomad Aang, Airbending Master Aang, Destined Savior Aang, Master of Elements Aang, Swift Savior Aang, at the Crossroads Aang, the Last Airbender Absolute Virtue Arahbo, Roar of the World Arahbo, the First Fang Argyr, Tidal Spinner Autumn Willow Avatar Aang Avatar Kuruk Avatar Kyoshi Avatar Kyoshi, Earthbender Avatar Roku Avatar Roku, Firebender Avatar Yangchen Child of Alara Cloud of Darkness Daughter of Autumn Evra, Halcyon Witness Gandalf of the Secret Fire Gandalf the Grey Gandalf the White Gandalf, Friend of the Shire Gandalf, Westward Voyager Gandalf, White Rider Gishath, Sun's Avatar Hades, Sorcerer of Eld Hogaak, Arisen Necropolis Karona, False God Kefka, Ruler of Ruin Kitsune, Dragon's Daughter Muldrotha, the Gravetide Muldrotha, the Gravetide Multani, Yavimaya's Avatar Neo Exdeath, Dimension's End Niv-Mizzet Reborn Niv-Mizzet, Guildpact Niv-Mizzet, Supreme Phage the Untouchable Progenitus Radagast the Brown Radagast, Wizard of Wilds Ragnarok, Divine Deliverance Rat King, Pale Piper Rat King, Verminister Saruman of Many Colors Saruman the White Saruman, the White Hand Sauron, Lord of the Rings Sauron, the Dark Lord Sauron, the Lidless Eye Sauron, the Necromancer Scion of the Ur-Dragon Sephiroth, Fabled SOLDIER Sephiroth, Fallen Hero Sephiroth, One-Winged Angel Sephiroth, Planet's Heir Seymour Flux Sharkey, Tyrant of the Shire Sin, Spira's Punishment Sin, Unending Cataclysm Soul of Windgrace Spider-Byte, Web Warden The Balrog of Moria The Balrog, Durin's Bane

"I bought a Lotus BGS[-graded] 9.5 three years ago for $880k and that was never publicized, so the public only knows about a Lotus selling for ~$500k." As for this current purchase in that context: "This Lotus I got is much better than my previous Lotus, hence the higher price tag," says Benjamin
If a spell with rebound that you cast from your hand doesn't resolve for any reason (either because another spell or ability counters it or because all its targets are illegal as it tries to resolve), none of its effects will happen, including rebound
I recommend building an Excel file to get your organized so that you can clearly understand what your cards to and where they fall