Froghemoth

Trample, haste

Whenever The Gitrog deals combat damage to a player, you may sacrifice a creature that saddled it this turn. If you do, draw X cards, then put up to X land cards from your hand onto the battlefield tapped, where X is the sacrificed creature's power.

Saddle 1

Whenever Venus is dealt damage, put that many +1/+1 counters on her. (She must survive the damage to get the counters.)

Whenever a creature you control with a counter on it deals combat damage to a player, you may pay . If you do, draw a card.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever this creature deals combat damage to a player, return target permanent card from your graveyard to your hand.

Backup 1, backup 1, backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn. Each backup ability triggers separately.)

Trample

Whenever this creature deals combat damage to a player, put that many +1/+1 counters on it.

Menace

Whenever this creature attacks, exile up to one card of each card type from defending player's graveyard. Put a +1/+1 counter on this creature for each card exiled this way.

Trample

Hideaway 3, hideaway 3 (When this creature enters, look at the top three cards of your library, exile one face down, then put the rest on the bottom in a random order. Then do it again.)

Whenever this creature deals combat damage to a player, if there are cards exiled with it, you may play one of them without paying its mana cost.