Scute Swarm (Showcase) [Zendikar Rising] Demon Kraken Set: Metal Raiders Card type:

Set: Metal Raiders Card type: Effect Monster Rarity: Ultra Rare Attack: 2600 Defense: 2200 Toss a coin 3 times

you may return target creature card from your graveyard to the battlefield

and can only activate them while "Blue-Eyes White Dragon" is on your field or in your GY

A deck can have any number of cards named Relentless Rats

Set: Commander 2017 Type: Creature — Dragon Rarity: Rare Cost: {3}{W}{W} Flying

Scute Swarm (Showcase) [Zendikar Rising] Demon Kraken Set: Metal Raiders Card type:Set: Zendikar Rising Type: Creature Insect Rarity: Rare Cost: {2}{G} Landfall Whenever a land enters the battlefield under your control, create a 1 1 green Insect creature token. If you control six or more lands, create a token that's a copy of Scute Swarm instead.