Are you willing to take three? is a question that Ill be asking
When CARDNAME enters the battlefield, you may search your library for any number of cards named CARDNAME, reveal them, put them into your hand, then shuffle your library
(See rule 101.4.) Then the game once again checks for and resolves state-based actions until none are performed, then abilities that triggered during this process go on the stack
If for some reason you are playing primarily super top end with a lot of entirely colourless cards among them then Channel is a good support card to help you improve your odds on getting some of those things into play
If you want to upgrade your Tyranid Swarm deck a little, try adding some cards that help spread and add more counters to your creatures, like Unbound Flourishing and Inexorable Tide
With that out of the way, lets get started on our adventure