The List

Creature — Elf

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 its echo cost.)
When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Yavimaya Granger

Artifact

At the beginning of each opponent's upkeep, this artifact deals X damage to that player, where X is 3 minus the number of cards in their hand.

Wheel of Torture

Sorcery

Return two target creatures to their owners' hands.

Undo

World Championship Decks 1999

Artifact Creature — Gnome

Echo {3} (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 echo cost.)
Sacrifice this creature: It deals 1 damage to any target.

Ticking Gnomes

Urza's Legacy

Wing Snare

Portal Second Age

Creature — Human Knight

{T}: Target creature gets +2/+2 until end of turn. Activate only during your turn, before attackers are declared.

Alaborn Veteran

Target creature gets +3/+3 and gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)