best burn cards mtg MTG: The Spells In Pauper MTG Best Pioneer Burn staple
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You can also think about self-mill and spells that you can naturally cast from the graveyard, considering mechanics like flashback, encore, and escape

Hangarback Walker is also just a fine card for about any deck, whether your intention is to do more attacking or blocking
Granted, its non-tokens only, but at minimum creatures that already enter with counters come in with more, and any deck relying on counters (energy, experience, etc.) gets a steady flow of extra counters simply by playing creatures
Bottom-up design is the opposite
This is important for the mechanics of the deck, which rely on enchantments, auras and artifacts to increase the strength of their creatures and buff them heavily

Even in a set with a dedicated self-mill archetype, a 2/2 like this is far too fragile to expect to be your win condition
