Spike

Can only cast if you control Twilight Sparkle
You and Ponies you control have hexproof
Flying, Trample, Deathtouch
Whenever Spike deals damage to a player,
you gain a gorge counter.
If you have 10 or more gorge counters on Spike,
search your deck for Spike the Reckless. Then
shuffle your library.
Spike gets +1/+1 for each gorge counter you have