Mana Echoes [Onslaught] Saviors of Kamigawa Set: Secret Lair Drop Series

Set: Secret Lair Drop Series Type: Creature — Human Cleric Rarity: Rare Cost: {W}{W} During your turn

Set: Grand Prix Promos Type: Creature — Snake Rarity: Rare Cost: {1}{G} Landfall — Whenever a land enters the battlefield under your control

Set: Multiverse Legends Type: Legendary Creature — Treefolk Druid Rarity: Rare Cost: {4}{G} Whenever another nontoken creature you control dies

where X is the

Megatron deals damage equal to the sacrificed artifact's mana value to target creature

Mana Echoes [Onslaught] Saviors of Kamigawa Set: Secret Lair Drop SeriesSet: Onslaught Type: Enchantment Rarity: Rare Cost: {2}{R}{R} Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it. When the ground is saturated with mana, even the lightest footstep can bring it to the surface.