Thekla Brockden

When Thekla Brockden enters the battlefield, you
may search your library and/or graveyard for a
Rune card, reveal it, and put it into your hand.
If you search your library this way, shuffle.
Boast — {x}: Thekla Brockden gets +X/+X and is
a Giant in addition to its other types until end of
turn. (Activate only if this creature attacked this turn
and only once each turn.)
"Quite amazing isn't it?"