In combo shells, every sacrifice moves you closer to a deterministic win
You still can of course, but planeswalkers, Stax, and decks with win conditions that thrive simply by biding their time (Darksteel Reactor and Azors Elocutors anyone?) are also very viable options here
You may choose counters of different kinds
Personally I feel shelling out that amount needs to come with some level of rarity, conditional or others, but as I collect Japanese I appreciate theres far less $1k set cards than in English which may sway me
Its a powerful mechanic on its own that requires very little setup to be good, but once you have these mighty pieces in play, the skys the limit
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