Much of the Cult of Rakdos's activities are designed to keep their leader entertained
Whenever equipped creature attacks, each opponent loses 1 life
For example, suppose you control a Mjlnir that isn't attached to anything as well as Loki, God of Mischief (a blue God Sorcerer Villain creature) with Super-Soldier Serum (an Aura with "Whenever enchanted creature attacks or blocks, attach any number of target Equipment you control to it.") attached to him
The most recent and the final drop, Winter Diva, has been up for seventeen days and only the ENG nonfoil has sold out
It was actually played in Vintage at some point, seeing as you could wreck opponents powerful mana rocks whenever the Predator hits
And if youre looking for sustained board presence, you could try Lattice Library and Nev, the Practical Dean to pick up +1/+1 counters as you cast X-spells