Probably dont run this unless you can make chapter 3 good, but dragons have been spoiled for choice latelysee my comments on Rivazand The Elder Dragon War seems especially good with a commander like Rivaz or Bladewing the Risen that can take advantage of dumping uncastable dragons from your hand to the grave
I like grabbing Terminate, Swords to Plowshares, and such pretty well
As secondary themes, a fair few of her cards can return cards from the graveyard, most notably Vital Force and Shadowed Boughs
What usually happens in a multiplayer Commander game is that everyone will start-off paying the cost, but when one person breaks, they all will, and then youll be buried under your own cards
0: Until end of turn, Arlinn becomes a 5/5 Werewolf creature with trample, indestructible, and haste
The legendary artifact card that jumps to mind for me is of course Excalibur, which will circumvent that pesky high mana value, but there are a ton of sweet options you could put in the deck outside of Equipment