At the beginning of your end step, if you didn't cast any spells this turn, Gilt-Leaf Debris deals 1 damage to you.
: Add
or
to your mana pool.
Put Gilt-Leaf Debris on top of your library: Add
to your mana pool.

: Gilt-Leaf Debris becomes a 2/1 green and blue Bear creature until end of turn. It's still a land.