Buppagow, Dinosaur Rider

Dinosaurs you control have Saddle 2 and "When this creature attacks while saddled, attacking dinosaurs
you control gain first strike and trample until end of turn."

Whenever a dinosaur you control deals combat damage to a player, if this is the first time this ability has resolved this turn, you gain 2 life, if it's
the second time, draw a card, if it's the third time, you may put a dinosaur from your hand onto the batlefield.