Tape Delay Feedback

Cumulative upkeep: {1}, put a +1/+0 token on a creature you control.
Sacrifice Tape Delay Feedback: put X +1/+0 tokens on creatures you control, where X is equal to the number of +1/+0 tokens in play when this effect resolves. At the end of that turn, remove all +1/+0 tokens from the game
Even the faintest whisper oscillate into a ear-deafening wall of white noise if the feedback goes out of control