Other cards like Goblin Tunneler and Rogue's Passage that make creatures unblockable are also fairly great options with little investment, with Jumbo Cactuar seeming to pair pretty excellently with both red and green spells respectively
However, in decks that play fewer elements, these artifacts can shine and give a player an excellent head start
Aeon Chronicler Ancestral Vision Deep-Sea Kraken Delay Dichotomancy Errant Ephemeron Inevitable Betrayal Infiltrator il-Kor Inspiring Refrain Reality Strobe Riftwing Cloudskate Sinister Concierge Star Whale Suspend Taigam, Master Opportunist Veiling Oddity Viscerid Deepwalker Watcher of Hours
123 KB Astarion, the Decadent 265 370
The final level replaces you dead modified creatures with inklings when they die
At the beginning of combat on your turn, each opponent faces a villainous choice - That player sacrifices a creature they control, or you create a 3/3 black Dalek artifact creature token with menace