This is the aggro shell. You run low-cost unblockable creatures like Slither Blade or Invisible Stalker , then stack onto them.
Sometimes the best way to get an unblockable creature is to play one that already has the ability built-in. cards that give unblockable mtg better
Toski + Aqueous Form = indestructible, unblockable, draw engine. This is the aggro shell