It's easy to forget how powerful Grimgrin can be given how old it is, but if you can reliably untap the Zombie it's an absolute house in play - when it attacks you destroy any creature and grow the Grimgrin, making it a threat to end games with commander damage
The most simplistic, retro game design is from Patrick Star as Barktooth Warbeard, a 7-mana 6/5 with no rule text that has no idea what it's doing but is really just happy to be here (gosh, remember when we used to get vanilla creatures?)
Sunder - Bounce all Lands
Also great response on chat, thanks for the sliver deck gift
Creature - Shapeshifter Color tag templates(None) Shadowmage Infiltrator Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Whenever this creature deals combat damage to a player, you may draw a card
Sea Gate Wreckage A legendary land card from the Trenzalore Clocktower Magic: The Gathering Doctor Who set