Fluttershy (1538) - Secret Lair Drop (SLD) G03 reveal Legacy Weapon and shuffle

reveal Legacy Weapon and shuffle it into its owner's library instead

Mizzium Tank becomes an artifact creature and gets +1/+1 until end of turn

you may put one of those cards with that name into its owner's hand

"The wise learn from successes as well as mistakes

Fluttershy (1538) - Secret Lair Drop (SLD) G03 reveal Legacy Weapon and shuffleDefender, flying {1}, {T}: Put a +1 +1 counter on each creature with a tail target player controls. Stare down up to one target creature until end of turn. (It can't attack or block as long as you're looking directly at it.) "My sanctuary can be the one place in Equestria critters call home."