mtg cards like sheoldred the apocalypse Arcane Alterations Sheoldred, Lightly Played Set Sheoldred, the Apocalypse - Full

Their one shot burst nature really suits Tinker and Welder effects very well

The second subtheme is Blink, running creatures with powerful ETB triggers like Knight of the White Orchid and Karmic Guide, then getting extra triggers off them with cards like Disorder in the Court and Flood of Tears

Whatever they choose, it leaves you with a good advantage

You can hold up mana to bounce something, and if there's nothing significant enough, you can just cast the creature portion on the opposing end step

This will probably see the play with two decent effects, although it is also just an instant flavor win

rituals are spells that generate mana