Urza's Destiny

Flying When you control no enchantments, sacrifice Tethered Griffin.

Flying {T}: Target attacking or blocking creature gets +2/+2 until end of turn.

As long as Thran Golem is enchanted, it gets +2/+2 and has flying, first strike, and trample.

When Reliquary Monk dies, destroy target artifact or enchantment.

{T}: Reveal any number of artifact cards in your hand. Add {C}{C} for each card revealed this way.

At the beginning of your upkeep, sacrifice Masticore unless you discard a card. {2}: Masticore deals 1 damage to target creature. {2}: Regenerate M...

{2}: Mantis Engine gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.) {2}: Mantis Engine gains first ...

Flying When Junk Diver dies, return another target artifact card from your graveyard to your hand.

Echo {4} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its...

{2}, Sacrifice Brass Secretary: Draw a card.

Yavimaya Enchantress gets +1/+1 for each enchantment on the battlefield.

When Yavimaya Elder dies, you may search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle. {2}, Sacr...

You may have Thorn Elemental assign its combat damage as though it weren't blocked.

All creatures able to block Taunting Elf do so.

{T}: Prevent the next 4 damage that would be dealt to any target this turn.

{T}: Add {G} for each Forest you control.

Reach (This creature can block creatures with flying.)

When Marker Beetles dies, target creature gets +1/+1 until end of turn. {2}, Sacrifice Marker Beetles: Draw a card.

{2}{G}, {T}: Reveal any number of green cards in your hand. Target creature gets +X/+X until end of turn, where X is the number of cards revealed t...

Echo {2}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay ...

{T}: Add {G}. {2}, Sacrifice Heart Warden: Draw a card.

Trample

When Gamekeeper dies, you may exile it. If you do, reveal cards from the top of your library until you reveal a creature card. Put that card onto t...

When you control no other creatures, sacrifice Emperor Crocodile.