Arbor Colossus [Commander 2015] Dragon's Maze [Start of Your Main Phase]

[Start of Your Main Phase] If there're 6 or fewer total cards in both players' security stacks

drawing monoliths of stone and soil toward the flaming orb

you may return that nonland permanent card to the battlefield instead

Set: Collectors’ Edition Type: Instant Rarity: Rare Cost: {W} Target spell or permanent becomes white

Arbor Colossus [Commander 2015] Dragon's Maze [Start of Your Main Phase]Set: Commander 2015 Type: Creature Giant Rarity: Rare Cost: {2}{G}{G}{G} Reach {3}{G}{G}{G}: Monstrosity 3. (If this creature isn't monstrous, put three +1 +1 counters on it and it becomes monstrous.) When Arbor Colossus becomes monstrous, destroy target creature with flying an opponent controls.