Intervene

Counter target spell that targets a creature.

Murmuring Mystic

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Counter target spell that targets a permanent you control.

Look at target player's hand.
Draw a card.

Whenever you cast your second spell each turn, put a +1/+1 counter on this creature. It can't be blocked this turn.

Counter target instant or sorcery spell unless its controller pays {1}.
Draw a card.

Look at target player's hand.
Draw a card at the beginning of the next turn's upkeep.

Target creature gains flying until end of turn.
Draw a card.

Target creature can't be blocked this turn.
Draw a card.

Whenever you cast your second spell each turn, put a +1/+1 counter on this creature.