If control or midrange decks can't deal with your indestructible creatures, that's a great way to close out the game, even after your opponent has stabilized
It is very easy to bring out and can quickly refund its own cost
#3 Ethans Adventure SAR (7,500) Ethans Adventure SAR rounds out the top 3 at approximately 7,500 (~$51 USD)
By first summoning the monster, its power to Special summon any Superheavy Samurai from your deck or hand (provided you have no spell or trap cards in your Graveyard) then opens up the ability to Synchro summon any of the many Synchro monsters the deck has at its disposal
Alchemax Slayer-Bots works well with flicker effects, cards that care about artifacts, and proliferate effects
We knew Grixis players were starved from Shards of Alara , with the shard missing its planeswalker and unearth trailing as an unloved mechanic in some eyes