Urza's Legacy

{T}: Target creature gains forestwalk until end of turn. (It can't be blocked as long as defending player controls a Forest.)

Whenever Treefolk Mystic blocks or becomes blocked by a creature, destroy all Auras attached to that creature.

Flash 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 yo...

Flying, protection from black Echo {3}{W}{W} (At the beginning of your upkeep, if this came under your control since the beginning of your last upk...

Echo {G}{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 ...

Shroud (This creature can't be the target of spells or abilities.) Multani, Maro-Sorcerer's power and toughness are each equal to the total number...

You may have Lone Wolf assign its combat damage as though it weren't blocked.

Whenever Gang of Elk becomes blocked, it gets +2/+2 until end of turn for each creature blocking it.

Echo {3}{G}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you p...

Flying, protection from artifacts