Urza's Saga

Whenever a creature dies, if another creature is on the battlefield, return the first card to the battlefield under its owner's control at the begi...

{0}: Hopping Automaton gets -1/-1 and gains flying until end of turn.

At the beginning of your draw step, draw an additional card. At the beginning of your end step, discard your hand.

Cycling abilities you activate cost up to {2} less to activate.

You may choose not to untap Endoskeleton during your untap step. {2}, {T}: Target creature gets +0/+3 for as long as Endoskeleton remains tapped.

{4}, Sacrifice Copper Gnomes: You may put an artifact card from your hand onto the battlefield.

{1}, Sacrifice a permanent: You gain 1 life.

{X}, {T}: Search your library for a creature card with converted mana cost X or less, reveal it, and put it into your hand. Then shuffle your library.

When Cathodion dies, add {C}{C}{C}.