Riptide Chronologist [Onslaught] Arena League 2000 Set: Urza's Saga Type: Artifact

Set: Urza's Saga Type: Artifact Rarity: Rare Cost: {4} At the beginning of each player's upkeep

Set: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {B}{B}{B} Search your library and graveyard for five cards and exile the rest

Set: Seventh Edition Type: Creature — Goblin Rarity: Rare Cost: {1}{R}{R} Other Goblins get +1/+1 and have mountainwalk

Set: Commander's Arsenal Type: Enchantment Rarity: Rare Cost: {1}{G} At the beginning of your draw step

{4}: Put a +1/+1 counter on Walking Ballista

Riptide Chronologist [Onslaught] Arena League 2000 Set: Urza's Saga Type: ArtifactSet: Onslaught Type: Creature Human Wizard Rarity: Uncommon Cost: {3}{U}{U} {U}, Sacrifice Riptide Chronologist: Untap all creatures of the creature type of your choice. The wizard consulted the Riptide Project about how to further his research. He wasn't prepared for what they told him.