Ishgard, the Holy See Faith & Grief provides a strong burst of card advantage later in the game, either to recoup after a board wipe or make use of a bunch of self-mill
I looked at playing Lashknife, simply as it is a free aura and lets you go off a bit quicker
Its been a busy year for Wizards of the Coasts limited-time mini-sets, and while the company sold out of all three Final Fantasy drops in record time (leaving many disappointed), you can still get them via third-party sellers
Since Teferi, Time Raveler stops any permission spells from being cast at instant speed, the Planeswalker is also great in combo decks trying to force through a winning game line and it doesnt only stop these permission spells, but also bounces problematic permanents which are preventing your combo from functioning
Activating this ability doesn't count as casting your commander, so it won't increase the commander tax