
ReachReachCan block creatures with flying., menacemenaceCan't be blocked except by two or more creatures., trampletrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking.
Squirrels you control have ": Target Squirrel gets +2/+2 and gains trampletrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking. until end of turn. Activate only as a sorcery."
Whenever one or more Squirrels you control deal combat damage to a player, draw a card.
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.